diff --git a/TOC.md b/TOC.md
index 38078bd0b7524..0ebfe61be7a87 100644
--- a/TOC.md
+++ b/TOC.md
@@ -685,6 +685,7 @@
     - [Introduction](/tidb-distributed-execution-framework.md)
     - [TiDB Global Sort](/tidb-global-sort.md)
   - [System Variables](/system-variables.md)
+  - [System Variable Reference](/system-variable-reference.md)
   - [Server Status Variables](/status-variables.md)
   - Configuration File Parameters
     - [tidb-server](/tidb-configuration-file.md)
diff --git a/system-variable-reference.md b/system-variable-reference.md
new file mode 100644
index 0000000000000..7f0643abb192e
--- /dev/null
+++ b/system-variable-reference.md
@@ -0,0 +1,4288 @@
+---
+title: System Variable Reference
+summary: A list of all TiDB system variables and their references in the documentation.
+---
+
+<!-- Note: The content of the reference lists in this file is organized in the following order:
+- For non-release-notes docs, put them in ascending alphabetical order.
+- For release notes docs, put them in descending order by version number.
+- Put release notes docs after non-release-notes docs. -->
+
+# System Variable Reference
+
+This page lists all TiDB system variables and the documents that reference them in the documentation. You can view [System Variables](/system-variables.md) for more details of each variable.
+
+## Variable reference
+
+### allow_auto_random_explicit_insert
+
+Referenced in:
+
+- [AUTO_RANDOM](/auto-random.md)
+- [Insert Data](/develop/dev-guide-insert-data.md)
+- [SESSION_VARIABLES](/information-schema/information-schema-session-variables.md)
+- [System Variables](/system-variables.md#allow_auto_random_explicit_insert-new-in-v403)
+- [VARIABLES_INFO](/information-schema/information-schema-variables-info.md)
+
+### authentication_ldap_sasl_auth_method_name
+
+Referenced in:
+
+- [System Variables](/system-variables.md#authentication_ldap_sasl_auth_method_name-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### authentication_ldap_sasl_bind_base_dn
+
+Referenced in:
+
+- [System Variables](/system-variables.md#authentication_ldap_sasl_bind_base_dn-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### authentication_ldap_sasl_bind_root_dn
+
+Referenced in:
+
+- [System Variables](/system-variables.md#authentication_ldap_sasl_bind_root_dn-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### authentication_ldap_sasl_bind_root_pwd
+
+Referenced in:
+
+- [System Variables](/system-variables.md#authentication_ldap_sasl_bind_root_pwd-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### authentication_ldap_sasl_ca_path
+
+Referenced in:
+
+- [System Variables](/system-variables.md#authentication_ldap_sasl_ca_path-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### authentication_ldap_sasl_init_pool_size
+
+Referenced in:
+
+- [System Variables](/system-variables.md#authentication_ldap_sasl_init_pool_size-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### authentication_ldap_sasl_max_pool_size
+
+Referenced in:
+
+- [System Variables](/system-variables.md#authentication_ldap_sasl_max_pool_size-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### authentication_ldap_sasl_server_host
+
+Referenced in:
+
+- [System Variables](/system-variables.md#authentication_ldap_sasl_server_host-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### authentication_ldap_sasl_server_port
+
+Referenced in:
+
+- [System Variables](/system-variables.md#authentication_ldap_sasl_server_port-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### authentication_ldap_sasl_tls
+
+Referenced in:
+
+- [System Variables](/system-variables.md#authentication_ldap_sasl_tls-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### authentication_ldap_simple_auth_method_name
+
+Referenced in:
+
+- [System Variables](/system-variables.md#authentication_ldap_simple_auth_method_name-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### authentication_ldap_simple_bind_base_dn
+
+Referenced in:
+
+- [System Variables](/system-variables.md#authentication_ldap_simple_bind_base_dn-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### authentication_ldap_simple_bind_root_dn
+
+Referenced in:
+
+- [System Variables](/system-variables.md#authentication_ldap_simple_bind_root_dn-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### authentication_ldap_simple_bind_root_pwd
+
+Referenced in:
+
+- [System Variables](/system-variables.md#authentication_ldap_simple_bind_root_pwd-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### authentication_ldap_simple_ca_path
+
+Referenced in:
+
+- [System Variables](/system-variables.md#authentication_ldap_simple_ca_path-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### authentication_ldap_simple_init_pool_size
+
+Referenced in:
+
+- [System Variables](/system-variables.md#authentication_ldap_simple_init_pool_size-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### authentication_ldap_simple_max_pool_size
+
+Referenced in:
+
+- [System Variables](/system-variables.md#authentication_ldap_simple_max_pool_size-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### authentication_ldap_simple_server_host
+
+Referenced in:
+
+- [System Variables](/system-variables.md#authentication_ldap_simple_server_host-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### authentication_ldap_simple_server_port
+
+Referenced in:
+
+- [System Variables](/system-variables.md#authentication_ldap_simple_server_port-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### authentication_ldap_simple_tls
+
+Referenced in:
+
+- [System Variables](/system-variables.md#authentication_ldap_simple_tls-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### auto_increment_increment
+
+Referenced in:
+
+- [AUTO_INCREMENT](/auto-increment.md)
+- [AUTO_RANDOM](/auto-random.md)
+- [Bidirectional Replication](/ticdc/ticdc-bidirectional-replication.md)
+- [Error Codes and Troubleshooting](/error-codes.md)
+- [SESSION_VARIABLES](/information-schema/information-schema-session-variables.md)
+- [System Variables](/system-variables.md#auto_increment_increment)
+- [VARIABLES_INFO](/information-schema/information-schema-variables-info.md)
+- [TiDB 7.1.6 Release Notes](/releases/release-7.1.6.md)
+- [TiDB 6.5.10 Release Notes](/releases/release-6.5.10.md)
+- [TiDB 3.0.9 Release Notes](/releases/release-3.0.9.md)
+
+### auto_increment_offset
+
+Referenced in:
+
+- [AUTO_INCREMENT](/auto-increment.md)
+- [AUTO_RANDOM](/auto-random.md)
+- [Bidirectional Replication](/ticdc/ticdc-bidirectional-replication.md)
+- [Error Codes and Troubleshooting](/error-codes.md)
+- [SESSION_VARIABLES](/information-schema/information-schema-session-variables.md)
+- [System Variables](/system-variables.md#auto_increment_offset)
+- [VARIABLES_INFO](/information-schema/information-schema-variables-info.md)
+- [TiDB 7.1.6 Release Notes](/releases/release-7.1.6.md)
+- [TiDB 6.5.10 Release Notes](/releases/release-6.5.10.md)
+- [TiDB 3.0.9 Release Notes](/releases/release-3.0.9.md)
+
+### autocommit
+
+Referenced in:
+
+- [Non-Transactional DML Statements](/non-transactional-dml.md)
+- [System Variables](/system-variables.md#autocommit)
+- [Transactions](/transaction-overview.md)
+
+### block_encryption_mode
+
+Referenced in:
+
+- [Encryption and Compression Functions](/functions-and-operators/encryption-and-compression-functions.md)
+- [System Variables](/system-variables.md#block_encryption_mode)
+
+### character_set_client
+
+Referenced in:
+
+- [Character Set and Collation](/character-set-and-collation.md)
+- [GBK](/character-set-gbk.md)
+- [SET [NAMES|CHARACTER SET]](/sql-statements/sql-statement-set-names.md)
+- [System Variables](/system-variables.md#character_set_client)
+- [Use Dumpling to Export Data](/dumpling-overview.md)
+- [VIEWS](/information-schema/information-schema-views.md)
+- [Views](/views.md)
+- [Views](/develop/dev-guide-use-views.md)
+
+### character_set_connection
+
+Referenced in:
+
+- [Character Set and Collation](/character-set-and-collation.md)
+- [GBK](/character-set-gbk.md)
+- [SET [NAMES|CHARACTER SET]](/sql-statements/sql-statement-set-names.md)
+- [System Variables](/system-variables.md#character_set_connection)
+- [Use Dumpling to Export Data](/dumpling-overview.md)
+
+### character_set_database
+
+Referenced in:
+
+- [Character Set and Collation](/character-set-and-collation.md)
+- [SET [NAMES|CHARACTER SET]](/sql-statements/sql-statement-set-names.md)
+- [System Variables](/system-variables.md#character_set_database)
+
+### character_set_results
+
+Referenced in:
+
+- [Character Set and Collation](/character-set-and-collation.md)
+- [SET [NAMES|CHARACTER SET]](/sql-statements/sql-statement-set-names.md)
+- [System Variables](/system-variables.md#character_set_results)
+- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md)
+- [TiDB 2.1 RC1 Release Notes](/releases/release-2.1-rc.1.md)
+
+### character_set_server
+
+Referenced in:
+
+- [Character Set and Collation](/character-set-and-collation.md)
+- [SET [NAMES|CHARACTER SET]](/sql-statements/sql-statement-set-names.md)
+- [System Variables](/system-variables.md#character_set_server)
+- [TiDB 5.3 Release Notes](/releases/release-5.3.0.md)
+
+### collation_connection
+
+Referenced in:
+
+- [Character Set and Collation](/character-set-and-collation.md)
+- [String Functions](/functions-and-operators/string-functions.md)
+- [System Variables](/system-variables.md#collation_connection)
+- [VIEWS](/information-schema/information-schema-views.md)
+- [Views](/views.md)
+- [Views](/develop/dev-guide-use-views.md)
+
+### collation_database
+
+Referenced in:
+
+- [Character Set and Collation](/character-set-and-collation.md)
+- [System Variables](/system-variables.md#collation_database)
+
+### collation_server
+
+Referenced in:
+
+- [Character Set and Collation](/character-set-and-collation.md)
+- [System Variables](/system-variables.md#collation_server)
+- [TiDB 5.3 Release Notes](/releases/release-5.3.0.md)
+- [TiDB 5.1 Release Notes](/releases/release-5.1.0.md)
+- [TiDB 5.0.2 Release Notes](/releases/release-5.0.2.md)
+
+### cte_max_recursion_depth
+
+Referenced in:
+
+- [Highly Concurrent Write Best Practices](/best-practices/high-concurrency-best-practices.md)
+- [System Variables](/system-variables.md#cte_max_recursion_depth)
+- [TiDB 5.1 Release Notes](/releases/release-5.1.0.md)
+
+### datadir
+
+Referenced in:
+
+- [System Variables](/system-variables.md#datadir)
+
+### ddl_slow_threshold
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#ddl_slow_threshold)
+
+### default_authentication_plugin
+
+Referenced in:
+
+- [Security Compatibility with MySQL](/security-compatibility-with-mysql.md)
+- [System Variables](/system-variables.md#default_authentication_plugin)
+- [TiDB Features](/basic-features.md)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+- [TiDB 5.2 Release Notes](/releases/release-5.2.0.md)
+
+### default_collation_for_utf8mb4
+
+Referenced in:
+
+- [Character Set and Collation](/character-set-and-collation.md)
+- [System Variables](/system-variables.md#default_collation_for_utf8mb4-new-in-v740)
+- [TiDB 8.1.2 Release Notes](/releases/release-8.1.2.md)
+- [TiDB 7.5.5 Release Notes](/releases/release-7.5.5.md)
+- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md)
+
+### default_password_lifetime
+
+Referenced in:
+
+- [System Variables](/system-variables.md#default_password_lifetime-new-in-v650)
+- [TiDB Password Management](/password-management.md)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### default_week_format
+
+Referenced in:
+
+- [Date and Time Functions](/functions-and-operators/date-and-time-functions.md)
+- [System Variables](/system-variables.md#default_week_format)
+- [TiDB 4.0.11 Release Notes](/releases/release-4.0.11.md)
+- [TiDB 2.1.7 Release Notes](/releases/release-2.1.7.md)
+
+### disconnect_on_expired_password
+
+Referenced in:
+
+- [System Variables](/system-variables.md#disconnect_on_expired_password-new-in-v650)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### div_precision_increment
+
+Referenced in:
+
+- [Numeric Functions and Operators](/functions-and-operators/numeric-functions-and-operators.md)
+- [System Variables](/system-variables.md#div_precision_increment-new-in-v800)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+
+### error_count
+
+Referenced in:
+
+- [System Variables](/system-variables.md#error_count)
+- [TiDB 2.1 RC1 Release Notes](/releases/release-2.1-rc.1.md)
+
+### foreign_key_checks
+
+Referenced in:
+
+- [FOREIGN KEY Constraints](/foreign-key.md)
+- [System Variables](/system-variables.md#foreign_key_checks)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+
+### group_concat_max_len
+
+Referenced in:
+
+- [Aggregate (GROUP BY) Functions](/functions-and-operators/aggregate-group-by-functions.md)
+- [System Variables](/system-variables.md#group_concat_max_len)
+- [TiDB 4.0.13 Release Notes](/releases/release-4.0.13.md)
+
+### have_openssl
+
+Referenced in:
+
+- [Certificate-Based Authentication for Login](/certificate-authentication.md)
+- [System Variables](/system-variables.md#have_openssl)
+
+### have_ssl
+
+Referenced in:
+
+- [Certificate-Based Authentication for Login](/certificate-authentication.md)
+- [System Variables](/system-variables.md#have_ssl)
+
+### hostname
+
+Referenced in:
+
+- [System Variables](/system-variables.md#hostname)
+
+### identity
+
+Referenced in:
+
+- [System Variables](/system-variables.md#identity-new-in-v530)
+
+### init_connect
+
+Referenced in:
+
+- [System Variables](/system-variables.md#init_connect)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+- [TiDB 5.1 Release Notes](/releases/release-5.1.0.md)
+- [TiDB 5.0.4 Release Notes](/releases/release-5.0.4.md)
+- [TiDB 4.0.14 Release Notes](/releases/release-4.0.14.md)
+
+### innodb_lock_wait_timeout
+
+Referenced in:
+
+- [System Variables](/system-variables.md#innodb_lock_wait_timeout)
+- [TiDB Pessimistic Transaction Mode](/pessimistic-transaction.md)
+- [TiKV Configuration File](/tikv-configuration-file.md)
+- [Troubleshoot Lock Conflicts](/troubleshoot-lock-conflicts.md)
+- [TiDB 3.0.6 Release Notes](/releases/release-3.0.6.md)
+
+### interactive_timeout
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#interactive_timeout)
+- [TiDB Cluster Management FAQs](/faq/manage-cluster-faq.md)
+- [Timeouts in TiDB](/develop/dev-guide-timeouts-in-tidb.md)
+- [TiDB 3.0 Beta Release Notes](/releases/release-3.0-beta.md)
+- [TiDB 3.0 GA Release Notes](/releases/release-3.0-ga.md)
+
+### last_insert_id
+
+Referenced in:
+
+- [AUTO_RANDOM](/auto-random.md)
+- [Connect to TiDB with mysql2](/develop/dev-guide-sample-application-ruby-mysql2.md)
+- [Information Functions](/functions-and-operators/information-functions.md)
+- [SHOW BUILTINS](/sql-statements/sql-statement-show-builtins.md)
+- [SQL Prepared Execution Plan Cache](/sql-prepared-plan-cache.md)
+- [System Variables](/system-variables.md#last_insert_id)
+- [TiDB 7.2.0 Release Notes](/releases/release-7.2.0.md)
+- [TiDB 3.1 RC Release Notes](/releases/release-3.1.0-rc.md)
+- [TiDB 2.1.17 Release Notes](/releases/release-2.1.17.md)
+- [TiDB 2.1 RC2 Release Notes](/releases/release-2.1-rc.2.md)
+
+### last_plan_from_binding
+
+Referenced in:
+
+- [SQL Plan Management (SPM)](/sql-plan-management.md)
+- [System Variables](/system-variables.md#last_plan_from_binding-new-in-v40)
+- [TiDB 4.0.12 Release Notes](/releases/release-4.0.12.md)
+
+### last_plan_from_cache
+
+Referenced in:
+
+- [Index Selection](/choose-index.md)
+- [SQL Non-Prepared Execution Plan Cache](/sql-non-prepared-plan-cache.md)
+- [SQL Prepared Execution Plan Cache](/sql-prepared-plan-cache.md)
+- [System Variables](/system-variables.md#last_plan_from_cache-new-in-v40)
+- [TiDB 4.0.2 Release Notes](/releases/release-4.0.2.md)
+
+### last_sql_use_alloc
+
+Referenced in:
+
+- [System Variables](/system-variables.md#last_sql_use_alloc-new-in-v640)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+
+### license
+
+Referenced in:
+
+- [System Variables](/system-variables.md#license)
+
+### max_allowed_packet
+
+Referenced in:
+
+- [DM Advanced Task Configuration File](/dm/task-configuration-file-full.md)
+- [Handle Errors in TiDB Data Migration](/dm/dm-error-handling.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#max_allowed_packet-new-in-v610)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB Data Migration FAQs](/dm/dm-faq.md)
+- [TiDB Lightning Configuration](/tidb-lightning/tidb-lightning-configuration.md)
+- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md)
+- [TiDB 5.2.4 Release Notes](/releases/release-5.2.4.md)
+- [TiDB 3.0.2 Release Notes](/releases/release-3.0.2.md)
+- [TiDB 2.1.5 Release Notes](/releases/release-2.1.5.md)
+- [TiDB 2.1 RC2 Release Notes](/releases/release-2.1-rc.2.md)
+- [TiDB 2.0.6 Release Notes](/releases/release-2.0.6.md)
+
+### max_connections
+
+Referenced in:
+
+- [Integrate TiDB with ProxySQL](/develop/dev-guide-proxysql-integration.md)
+- [Modify Configuration Dynamically](/dynamic-config.md)
+- [Precheck Errors, Migration Errors, and Alerts for Data Migration](https://docs.pingcap.com/tidbcloud/tidb-cloud-dm-precheck-and-troubleshooting)
+- [System Variables](/system-variables.md#max_connections)
+- [TiDB Cluster Management FAQs](/faq/manage-cluster-faq.md)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+
+### max_execution_time
+
+Referenced in:
+
+- [Best Practices for Developing Java Applications with TiDB](/best-practices/java-app-best-practices.md)
+- [Connection Pools and Connection Parameters](/develop/dev-guide-connection-parameters.md)
+- [Optimizer Hints](/optimizer-hints.md)
+- [SQL Plan Management (SPM)](/sql-plan-management.md)
+- [SQL Prepared Execution Plan Cache](/sql-prepared-plan-cache.md)
+- [System Variables](/system-variables.md#max_execution_time)
+- [Timeouts in TiDB](/develop/dev-guide-timeouts-in-tidb.md)
+- [Troubleshoot TiDB OOM Issues](/troubleshoot-tidb-oom.md)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+- [TiDB 4.0.2 Release Notes](/releases/release-4.0.2.md)
+- [TiDB 2.1.14 Release Notes](/releases/release-2.1.14.md)
+
+### max_prepared_stmt_count
+
+Referenced in:
+
+- [PREPARE](/sql-statements/sql-statement-prepare.md)
+- [System Variables](/system-variables.md#max_prepared_stmt_count)
+- [Troubleshoot TiDB OOM Issues](/troubleshoot-tidb-oom.md)
+- [TiDB 6.5.2 Release Notes](/releases/release-6.5.2.md)
+
+### mpp_exchange_compression_mode
+
+Referenced in:
+
+- [Explain Statements in the MPP Mode](/explain-mpp.md)
+- [System Variables](/system-variables.md#mpp_exchange_compression_mode-new-in-v660)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+
+### mpp_version
+
+Referenced in:
+
+- [Explain Statements in the MPP Mode](/explain-mpp.md)
+- [System Variables](/system-variables.md#mpp_version-new-in-v660)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+
+### password_history
+
+Referenced in:
+
+- [Security Compatibility with MySQL](/security-compatibility-with-mysql.md)
+- [System Variables](/system-variables.md#password_history-new-in-v650)
+- [TiDB Password Management](/password-management.md)
+- [`mysql` Schema](/mysql-schema/mysql-schema.md)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### password_reuse_interval
+
+Referenced in:
+
+- [System Variables](/system-variables.md#password_reuse_interval-new-in-v650)
+- [TiDB Password Management](/password-management.md)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### pd_enable_follower_handle_region
+
+Referenced in:
+
+- [System Variables](/system-variables.md#pd_enable_follower_handle_region-new-in-v760)
+- [TiDB Features](/basic-features.md)
+- [Tune Region Performance](/tune-region-performance.md)
+- [tidb-performance-tuning-config](/tidb-performance-tuning-config.md)
+- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md)
+- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md)
+
+### plugin_dir
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#plugin_dir)
+- [TiDB 5.3 Release Notes](/releases/release-5.3.0.md)
+
+### plugin_load
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#plugin_load)
+
+### port
+
+Referenced in:
+
+- [System Variables](/system-variables.md#port)
+
+### rand_seed1
+
+Referenced in:
+
+- [System Variables](/system-variables.md#rand_seed1)
+
+### rand_seed2
+
+Referenced in:
+
+- [System Variables](/system-variables.md#rand_seed2)
+
+### require_secure_transport
+
+Referenced in:
+
+- [Enable TLS between TiDB Clients and Servers](/enable-tls-between-clients-and-servers.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#require_secure_transport-new-in-v610)
+- [TLS Connections to TiDB Cloud Dedicated](https://docs.pingcap.com/tidbcloud/tidb-cloud-tls-connect-to-dedicated)
+- [TiDB Cloud Release Notes in 2022](https://docs.pingcap.com/tidbcloud/release-notes-2022)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+- [TiDB 7.5.1 Release Notes](/releases/release-7.5.1.md)
+- [TiDB 7.1.2 Release Notes](/releases/release-7.1.2.md)
+- [TiDB 6.5.6 Release Notes](/releases/release-6.5.6.md)
+- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md)
+
+### skip_name_resolve
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#skip_name_resolve-new-in-v520)
+
+### socket
+
+Referenced in:
+
+- [System Variables](/system-variables.md#socket)
+
+### sql_mode
+
+Referenced in:
+
+- [Aggregate (GROUP BY) Functions](/functions-and-operators/aggregate-group-by-functions.md)
+- [DM Advanced Task Configuration File](/dm/task-configuration-file-full.md)
+- [Date and Time Types](/data-type-date-and-time.md)
+- [Miscellaneous Functions](/functions-and-operators/miscellaneous-functions.md)
+- [Partitioning](/partitioned-table.md)
+- [Precision Math](/functions-and-operators/precision-math.md)
+- [Privilege Management](/privilege-management.md)
+- [SHOW ERRORS](/sql-statements/sql-statement-show-errors.md)
+- [SHOW WARNINGS](/sql-statements/sql-statement-show-warnings.md)
+- [SQL FAQs](/faq/sql-faq.md)
+- [SQL Mode](/sql-mode.md)
+- [Schema Object Names](/schema-object-names.md)
+- [System Variables](/system-variables.md#sql_mode)
+- [TiDB Lightning FAQs](/tidb-lightning/tidb-lightning-faq.md)
+- [TiDB User Account Management](/user-account-management.md)
+- [TiFlash Query Result Materialization](/tiflash/tiflash-results-materialization.md)
+- [Unstable Result Set](/develop/dev-guide-unstable-result-set.md)
+- [Use TiDB to Read TiFlash Replicas](/tiflash/use-tidb-to-read-tiflash.md)
+- [`SET [GLOBAL|SESSION] <variable>`](/sql-statements/sql-statement-set-variable.md)
+- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md)
+- [TiDB 8.1.0 Release Notes](/releases/release-8.1.0.md)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md)
+- [TiDB 7.5.5 Release Notes](/releases/release-7.5.5.md)
+- [TiDB 7.5.3 Release Notes](/releases/release-7.5.3.md)
+- [TiDB 7.5.2 Release Notes](/releases/release-7.5.2.md)
+- [TiDB 7.5.1 Release Notes](/releases/release-7.5.1.md)
+- [TiDB 7.1.5 Release Notes](/releases/release-7.1.5.md)
+- [TiDB 7.1.4 Release Notes](/releases/release-7.1.4.md)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+- [TiDB 6.5.9 Release Notes](/releases/release-6.5.9.md)
+- [TiDB 6.5.7 Release Notes](/releases/release-6.5.7.md)
+- [TiDB 5.4.1 Release Notes](/releases/release-5.4.1.md)
+- [TiDB 5.1 Release Notes](/releases/release-5.1.0.md)
+- [TiDB 5.0.2 Release Notes](/releases/release-5.0.2.md)
+- [TiDB 4.0.16 Release Notes](/releases/release-4.0.16.md)
+- [TiDB RC2 Release Notes](/releases/release-rc.2.md)
+
+### sql_require_primary_key
+
+Referenced in:
+
+- [DM Advanced Task Configuration File](/dm/task-configuration-file-full.md)
+- [System Variables](/system-variables.md#sql_require_primary_key-new-in-v630)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+
+### sql_select_limit
+
+Referenced in:
+
+- [SQL Prepared Execution Plan Cache](/sql-prepared-plan-cache.md)
+- [System Variables](/system-variables.md#sql_select_limit-new-in-v402)
+- [TiDB 4.0.2 Release Notes](/releases/release-4.0.2.md)
+
+### ssl_ca
+
+Referenced in:
+
+- [Certificate-Based Authentication for Login](/certificate-authentication.md)
+- [Connect to TiDB with Django](/develop/dev-guide-sample-application-python-django.md)
+- [Connect to TiDB with MySQL Connector/Python](/develop/dev-guide-sample-application-python-mysql-connector.md)
+- [Connect to TiDB with PyMySQL](/develop/dev-guide-sample-application-python-pymysql.md)
+- [Connect to TiDB with SQLAlchemy](/develop/dev-guide-sample-application-python-sqlalchemy.md)
+- [Connect to TiDB with peewee](/develop/dev-guide-sample-application-python-peewee.md)
+- [Get Started with TiDB + AI via Python](/vector-search/vector-search-get-started-using-python.md)
+- [Integrate TiDB Vector Search with Jina AI Embeddings API](/vector-search/vector-search-integrate-with-jinaai-embedding.md)
+- [Integrate TiDB Vector Search with SQLAlchemy](/vector-search/vector-search-integrate-with-sqlalchemy.md)
+- [Integrate Vector Search with LangChain](/vector-search/vector-search-integrate-with-langchain.md)
+- [Integrate Vector Search with LlamaIndex](/vector-search/vector-search-integrate-with-llamaindex.md)
+- [System Variables](/system-variables.md#ssl_ca)
+
+### ssl_cert
+
+Referenced in:
+
+- [Certificate-Based Authentication for Login](/certificate-authentication.md)
+- [System Variables](/system-variables.md#ssl_cert)
+
+### ssl_key
+
+Referenced in:
+
+- [Certificate-Based Authentication for Login](/certificate-authentication.md)
+- [System Variables](/system-variables.md#ssl_key)
+
+### system_time_zone
+
+Referenced in:
+
+- [System Variables](/system-variables.md#system_time_zone)
+- [Time Zone Support](/configure-time-zone.md)
+- [TiDB 3.0.8 Release Notes](/releases/release-3.0.8.md)
+
+### tidb_adaptive_closest_read_threshold
+
+Referenced in:
+
+- [Follower Read](/follower-read.md)
+- [System Variables](/system-variables.md#tidb_adaptive_closest_read_threshold-new-in-v630)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+
+### tidb_allow_batch_cop
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_allow_batch_cop-new-in-v40)
+- [TiDB 4.0.3 Release Notes](/releases/release-4.0.3.md)
+- [TiDB 4.0 RC.2 Release Notes](/releases/release-4.0.0-rc.2.md)
+
+### tidb_allow_fallback_to_tikv
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_allow_fallback_to_tikv-new-in-v50)
+- [TiDB 5.0 Release Notes](/releases/release-5.0.0.md)
+
+### tidb_allow_function_for_expression_index
+
+Referenced in:
+
+- [CREATE INDEX](/sql-statements/sql-statement-create-index.md)
+- [System Variables](/system-variables.md#tidb_allow_function_for_expression_index-new-in-v520)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB Features](/basic-features.md)
+
+### tidb_allow_mpp
+
+Referenced in:
+
+- [Explain Statements in the MPP Mode](/explain-mpp.md)
+- [Explore HTAP](/explore-htap.md)
+- [System Variables](/system-variables.md#tidb_allow_mpp-new-in-v50)
+- [TiFlash Query Result Materialization](/tiflash/tiflash-results-materialization.md)
+- [Use TiFlash MPP Mode](/tiflash/use-tiflash-mpp-mode.md)
+- [TiDB 7.3.0 Release Notes](/releases/release-7.3.0.md)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### tidb_allow_remove_auto_inc
+
+Referenced in:
+
+- [AUTO_INCREMENT](/auto-increment.md)
+- [Known Incompatibility Issues with Third-Party Tools](/develop/dev-guide-third-party-tools-compatibility.md)
+- [MySQL Compatibility](/mysql-compatibility.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_allow_remove_auto_inc-new-in-v2118-and-v304)
+- [TiDB 3.0.4 Release Notes](/releases/release-3.0.4.md)
+- [TiDB 2.1.18 Release Notes](/releases/release-2.1.18.md)
+
+### tidb_allow_tiflash_cop
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_allow_tiflash_cop-new-in-v730)
+- [TiDB 7.3.0 Release Notes](/releases/release-7.3.0.md)
+
+### tidb_analyze_column_options
+
+Referenced in:
+
+- [How to Run CH-benCHmark Test on TiDB](/benchmark/benchmark-tidb-using-ch.md)
+- [Stress Test TiDB Using TiUP Bench Component](/tiup/tiup-bench.md)
+- [System Variables](/system-variables.md#tidb_analyze_column_options-new-in-v830)
+- [tidb-performance-tuning-config](/tidb-performance-tuning-config.md)
+- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md)
+
+### tidb_analyze_distsql_scan_concurrency
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_analyze_distsql_scan_concurrency-new-in-v760)
+- [TiDB 8.2.0 Release Notes](/releases/release-8.2.0.md)
+- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md)
+
+### tidb_analyze_partition_concurrency
+
+Referenced in:
+
+- [Introduction to Statistics](/statistics.md)
+- [System Variables](/system-variables.md#tidb_analyze_partition_concurrency)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+- [TiDB 8.2.0 Release Notes](/releases/release-8.2.0.md)
+- [TiDB 8.1.1 Release Notes](/releases/release-8.1.1.md)
+- [TiDB 7.5.3 Release Notes](/releases/release-7.5.3.md)
+- [TiDB 7.5.0 Release Notes](/releases/release-7.5.0.md)
+
+### tidb_analyze_skip_column_types
+
+Referenced in:
+
+- [Introduction to Statistics](/statistics.md)
+- [System Variables](/system-variables.md#tidb_analyze_skip_column_types-new-in-v720)
+- [TiDB 8.2.0 Release Notes](/releases/release-8.2.0.md)
+- [TiDB 7.2.0 Release Notes](/releases/release-7.2.0.md)
+
+### tidb_analyze_version
+
+Referenced in:
+
+- [ANALYZE_STATUS](/information-schema/information-schema-analyze-status.md)
+- [Introduction to Statistics](/statistics.md)
+- [SHOW ANALYZE STATUS](/sql-statements/sql-statement-show-analyze-status.md)
+- [System Variables](/system-variables.md#tidb_analyze_version-new-in-v510)
+- [TiDB Memory Control](/configure-memory-usage.md)
+- [Troubleshoot TiDB OOM Issues](/troubleshoot-tidb-oom.md)
+- [TiDB 7.2.0 Release Notes](/releases/release-7.2.0.md)
+- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md)
+- [TiDB 5.4 Release Notes](/releases/release-5.4.0.md)
+- [TiDB 5.3 Release Notes](/releases/release-5.3.0.md)
+- [TiDB 5.2.4 Release Notes](/releases/release-5.2.4.md)
+- [TiDB 5.1.4 Release Notes](/releases/release-5.1.4.md)
+- [TiDB 5.1 Release Notes](/releases/release-5.1.0.md)
+
+### tidb_auto_analyze_concurrency
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_auto_analyze_concurrency-new-in-v840)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+
+### tidb_auto_analyze_end_time
+
+Referenced in:
+
+- [Introduction to Statistics](/statistics.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_auto_analyze_end_time)
+- [TiDB Troubleshooting Map](/tidb-troubleshooting-map.md)
+- [Troubleshoot Increased Read and Write Latency](/troubleshoot-cpu-issues.md)
+- [TiDB 5.3 Release Notes](/releases/release-5.3.0.md)
+
+### tidb_auto_analyze_partition_batch_size
+
+Referenced in:
+
+- [Introduction to Statistics](/statistics.md)
+- [System Variables](/system-variables.md#tidb_auto_analyze_partition_batch_size-new-in-v640)
+- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+
+### tidb_auto_analyze_ratio
+
+Referenced in:
+
+- [Introduction to Statistics](/statistics.md)
+- [SHOW STATS_HEALTHY](/sql-statements/sql-statement-show-stats-healthy.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [SQL FAQs](/faq/sql-faq.md)
+- [System Variables](/system-variables.md#tidb_auto_analyze_ratio)
+- [TiDB Troubleshooting Map](/tidb-troubleshooting-map.md)
+- [Troubleshoot Increased Read and Write Latency](/troubleshoot-cpu-issues.md)
+- [`EXPLAIN` Walkthrough](/explain-walkthrough.md)
+- [TiDB 8.1.0 Release Notes](/releases/release-8.1.0.md)
+- [TiDB 2.0.1 Release Notes](/releases/release-2.0.1.md)
+
+### tidb_auto_analyze_start_time
+
+Referenced in:
+
+- [Introduction to Statistics](/statistics.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_auto_analyze_start_time)
+- [TiDB Troubleshooting Map](/tidb-troubleshooting-map.md)
+- [Troubleshoot Increased Read and Write Latency](/troubleshoot-cpu-issues.md)
+- [TiDB 5.3 Release Notes](/releases/release-5.3.0.md)
+
+### tidb_auto_build_stats_concurrency
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_auto_build_stats_concurrency-new-in-v650)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### tidb_backoff_lock_fast
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_backoff_lock_fast)
+- [TiDB 5.4 Release Notes](/releases/release-5.4.0.md)
+
+### tidb_backoff_weight
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_backoff_weight)
+- [TiDB 3.0.3 Release Notes](/releases/release-3.0.3.md)
+
+### tidb_batch_commit
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_batch_commit)
+- [TiDB 3.0 Beta Release Notes](/releases/release-3.0-beta.md)
+- [TiDB 3.0 GA Release Notes](/releases/release-3.0-ga.md)
+
+### tidb_batch_delete
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_batch_delete)
+
+### tidb_batch_insert
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_batch_insert)
+- [TiDB 2.0.6 Release Notes](/releases/release-2.0.6.md)
+
+### tidb_batch_pending_tiflash_count
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_batch_pending_tiflash_count-new-in-v60)
+
+### tidb_broadcast_join_threshold_count
+
+Referenced in:
+
+- [Explain Statements in the MPP Mode](/explain-mpp.md)
+- [System Variables](/system-variables.md#tidb_broadcast_join_threshold_count-new-in-v50)
+- [Tune TiFlash Performance](/tiflash/tune-tiflash-performance.md)
+- [Use TiFlash MPP Mode](/tiflash/use-tiflash-mpp-mode.md)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### tidb_broadcast_join_threshold_size
+
+Referenced in:
+
+- [Explain Statements in the MPP Mode](/explain-mpp.md)
+- [System Variables](/system-variables.md#tidb_broadcast_join_threshold_size-new-in-v50)
+- [Tune TiFlash Performance](/tiflash/tune-tiflash-performance.md)
+- [Use TiFlash MPP Mode](/tiflash/use-tiflash-mpp-mode.md)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### tidb_build_sampling_stats_concurrency
+
+Referenced in:
+
+- [Introduction to Statistics](/statistics.md)
+- [System Variables](/system-variables.md#tidb_build_sampling_stats_concurrency-new-in-v750)
+- [TiDB 7.5.0 Release Notes](/releases/release-7.5.0.md)
+
+### tidb_build_stats_concurrency
+
+Referenced in:
+
+- [Introduction to Statistics](/statistics.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_build_stats_concurrency)
+- [TiDB Cloud TPC-C Performance Test Report for TiDB v6.5.6](https://docs.pingcap.com/tidbcloud/v6.5-performance-benchmarking-with-tpcc)
+- [TiDB Cloud TPC-C Performance Test Report for TiDB v7.1.3](https://docs.pingcap.com/tidbcloud/v7.1-performance-benchmarking-with-tpcc)
+- [TiDB Cloud TPC-C Performance Test Report for TiDB v7.5.0](https://docs.pingcap.com/tidbcloud/v7.5-performance-benchmarking-with-tpcc)
+- [TiDB Cloud TPC-C Performance Test Report for TiDB v8.1.0](https://docs.pingcap.com/tidbcloud/v8.1-performance-benchmarking-with-tpcc)
+- [TiDB 7.5.0 Release Notes](/releases/release-7.5.0.md)
+
+### tidb_capture_plan_baselines
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [SQL Plan Management (SPM)](/sql-plan-management.md)
+- [System Variables](/system-variables.md#tidb_capture_plan_baselines-new-in-v40)
+- [TiDB 5.0 Release Notes](/releases/release-5.0.0.md)
+- [TiDB 4.0 RC.1 Release Notes](/releases/release-4.0.0-rc.1.md)
+
+### tidb_cdc_write_source
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_cdc_write_source-new-in-v650)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### tidb_check_mb4_value_in_utf8
+
+Referenced in:
+
+- [Character Set and Collation](/character-set-and-collation.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_check_mb4_value_in_utf8)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [Upgrade and After Upgrade FAQs](/faq/upgrade-faq.md)
+
+### tidb_checksum_table_concurrency
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_checksum_table_concurrency)
+- [TiDB Lightning Configuration](/tidb-lightning/tidb-lightning-configuration.md)
+
+### tidb_cloud_storage_uri
+
+Referenced in:
+
+- [IMPORT INTO](/sql-statements/sql-statement-import-into.md)
+- [System Variables](/system-variables.md#tidb_cloud_storage_uri-new-in-v740)
+- [TiDB Global Sort](/tidb-global-sort.md)
+- [TiDB 8.1.1 Release Notes](/releases/release-8.1.1.md)
+- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md)
+
+### tidb_committer_concurrency
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_committer_concurrency-new-in-v610)
+- [TiDB Cloud Release Notes in 2022](https://docs.pingcap.com/tidbcloud/release-notes-2022)
+- [TiDB Monitoring Metrics](/grafana-tidb-dashboard.md)
+- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md)
+
+### tidb_config
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_config)
+- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md)
+- [TiDB 1.1 Beta Release Notes](/releases/release-1.1-beta.md)
+
+### tidb_constraint_check_in_place
+
+Referenced in:
+
+- [COMMIT](/sql-statements/sql-statement-commit.md)
+- [Constraints](/constraints.md)
+- [DM Advanced Task Configuration File](/dm/task-configuration-file-full.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_constraint_check_in_place)
+- [Transactions](/transaction-overview.md)
+- [TiDB 2.1.5 Release Notes](/releases/release-2.1.5.md)
+
+### tidb_constraint_check_in_place_pessimistic
+
+Referenced in:
+
+- [Constraints](/constraints.md)
+- [Error Codes and Troubleshooting](/error-codes.md)
+- [Modify Configuration Dynamically](/dynamic-config.md)
+- [SAVEPOINT](/sql-statements/sql-statement-savepoint.md)
+- [System Variables](/system-variables.md#tidb_constraint_check_in_place_pessimistic-new-in-v630)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB Pessimistic Transaction Mode](/pessimistic-transaction.md)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+
+### tidb_cost_model_version
+
+Referenced in:
+
+- [Cost Model](/cost-model.md)
+- [System Variables](/system-variables.md#tidb_cost_model_version-new-in-v620)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md)
+
+### tidb_current_ts
+
+Referenced in:
+
+- [DR Solution Based on Primary and Secondary Clusters](/dr-secondary-cluster.md)
+- [FLASHBACK CLUSTER](/sql-statements/sql-statement-flashback-cluster.md)
+- [Read Historical Data Using the `tidb_external_ts` Variable](/tidb-external-ts.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_current_ts)
+- [TiDB Specific Functions](/functions-and-operators/tidb-functions.md)
+- [TimeStamp Oracle (TSO) in TiDB](/tso.md)
+- [Upstream and Downstream Clusters Data Validation and Snapshot Read](/ticdc/ticdc-upstream-downstream-check.md)
+
+### tidb_ddl_disk_quota
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_ddl_disk_quota-new-in-v630)
+- [TiDB Distributed eXecution Framework (DXF)](/tidb-distributed-execution-framework.md)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+
+### tidb_ddl_enable_fast_reorg
+
+Referenced in:
+
+- [ADMIN SHOW DDL [JOBS|JOB QUERIES]](/sql-statements/sql-statement-admin-show-ddl.md)
+- [CREATE INDEX](/sql-statements/sql-statement-create-index.md)
+- [IMPORT INTO](/sql-statements/sql-statement-import-into.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_ddl_enable_fast_reorg-new-in-v630)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB Distributed eXecution Framework (DXF)](/tidb-distributed-execution-framework.md)
+- [TiDB Environment and System Configuration Check](/check-before-deployment.md)
+- [TiDB Features](/basic-features.md)
+- [TiDB Software and Hardware Requirements](/hardware-and-software-requirements.md)
+- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md)
+- [TiDB 8.1.2 Release Notes](/releases/release-8.1.2.md)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+- [TiDB 7.5.5 Release Notes](/releases/release-7.5.5.md)
+- [TiDB 7.5.0 Release Notes](/releases/release-7.5.0.md)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+
+### tidb_ddl_error_count_limit
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [SQL FAQs](/faq/sql-faq.md)
+- [System Variables](/system-variables.md#tidb_ddl_error_count_limit)
+- [TiDB Distributed eXecution Framework (DXF)](/tidb-distributed-execution-framework.md)
+
+### tidb_ddl_flashback_concurrency
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_ddl_flashback_concurrency-new-in-v630)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+
+### tidb_ddl_reorg_batch_size
+
+Referenced in:
+
+- [ADMIN ALTER DDL JOBS](/sql-statements/sql-statement-admin-alter-ddl.md)
+- [ADMIN SHOW DDL [JOBS|JOB QUERIES]](/sql-statements/sql-statement-admin-show-ddl.md)
+- [CREATE INDEX](/sql-statements/sql-statement-create-index.md)
+- [Execution Principles and Best Practices of DDL Statements](/ddl-introduction.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [Performance Tuning Best Practices](/develop/dev-guide-optimize-sql-best-practices.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [SQL FAQs](/faq/sql-faq.md)
+- [System Variables](/system-variables.md#tidb_ddl_reorg_batch_size)
+- [TiDB Distributed eXecution Framework (DXF)](/tidb-distributed-execution-framework.md)
+- [Troubleshoot Increased Read and Write Latency](/troubleshoot-cpu-issues.md)
+- [`EXPLAIN` Walkthrough](/explain-walkthrough.md)
+- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md)
+- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md)
+- [TiDB 3.0.3 Release Notes](/releases/release-3.0.3.md)
+- [TiDB 2.1.4 Release Notes](/releases/release-2.1.4.md)
+
+### tidb_ddl_reorg_max_write_speed
+
+Referenced in:
+
+- [ADMIN ALTER DDL JOBS](/sql-statements/sql-statement-admin-alter-ddl.md)
+- [ADMIN SHOW DDL [JOBS|JOB QUERIES]](/sql-statements/sql-statement-admin-show-ddl.md)
+- [System Variables](/system-variables.md#tidb_ddl_reorg_max_write_speed-new-in-v755-and-v850)
+- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md)
+- [TiDB 7.5.5 Release Notes](/releases/release-7.5.5.md)
+
+### tidb_ddl_reorg_priority
+
+Referenced in:
+
+- [CREATE INDEX](/sql-statements/sql-statement-create-index.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [SQL FAQs](/faq/sql-faq.md)
+- [System Variables](/system-variables.md#tidb_ddl_reorg_priority)
+- [TiDB Distributed eXecution Framework (DXF)](/tidb-distributed-execution-framework.md)
+- [Troubleshoot Increased Read and Write Latency](/troubleshoot-cpu-issues.md)
+- [TiDB 2.1 RC1 Release Notes](/releases/release-2.1-rc.1.md)
+
+### tidb_ddl_reorg_worker_cnt
+
+Referenced in:
+
+- [ADMIN ALTER DDL JOBS](/sql-statements/sql-statement-admin-alter-ddl.md)
+- [ADMIN SHOW DDL [JOBS|JOB QUERIES]](/sql-statements/sql-statement-admin-show-ddl.md)
+- [CREATE INDEX](/sql-statements/sql-statement-create-index.md)
+- [Execution Principles and Best Practices of DDL Statements](/ddl-introduction.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [Performance Tuning Best Practices](/develop/dev-guide-optimize-sql-best-practices.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [SQL FAQs](/faq/sql-faq.md)
+- [System Variables](/system-variables.md#tidb_ddl_reorg_worker_cnt)
+- [TiDB Distributed eXecution Framework (DXF)](/tidb-distributed-execution-framework.md)
+- [Troubleshoot Increased Read and Write Latency](/troubleshoot-cpu-issues.md)
+- [`EXPLAIN` Walkthrough](/explain-walkthrough.md)
+- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md)
+- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+- [TiDB 3.0.3 Release Notes](/releases/release-3.0.3.md)
+- [TiDB 2.1.4 Release Notes](/releases/release-2.1.4.md)
+
+### tidb_default_string_match_selectivity
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_default_string_match_selectivity-new-in-v620)
+- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md)
+
+### tidb_disable_txn_auto_retry
+
+Referenced in:
+
+- [How to Test TiDB Using Sysbench](/benchmark/benchmark-tidb-using-sysbench.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_disable_txn_auto_retry)
+- [TiDB Optimistic Transaction Model](/optimistic-transaction.md)
+- [Transactions](/transaction-overview.md)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md)
+- [TiDB 3.0.0-rc.2 Release Notes](/releases/release-3.0.0-rc.2.md)
+- [TiDB 3.0 GA Release Notes](/releases/release-3.0-ga.md)
+- [TiDB 2.1 Beta Release Notes](/releases/release-2.1-beta.md)
+- [TiDB 2.1 GA Release Notes](/releases/release-2.1-ga.md)
+- [TiDB 2.0.5 Release Notes](/releases/release-2.0.5.md)
+
+### tidb_distsql_scan_concurrency
+
+Referenced in:
+
+- [Introduction to Statistics](/statistics.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [SLOW_QUERY](/information-schema/information-schema-slow-query.md)
+- [SQL FAQs](/faq/sql-faq.md)
+- [System Variables](/system-variables.md#tidb_distsql_scan_concurrency)
+- [TiDB Best Practices](/best-practices/tidb-best-practices.md)
+- [TiDB Cloud TPC-C Performance Test Report for TiDB v6.5.6](https://docs.pingcap.com/tidbcloud/v6.5-performance-benchmarking-with-tpcc)
+- [TiDB Cloud TPC-C Performance Test Report for TiDB v7.1.3](https://docs.pingcap.com/tidbcloud/v7.1-performance-benchmarking-with-tpcc)
+- [TiDB Cloud TPC-C Performance Test Report for TiDB v7.5.0](https://docs.pingcap.com/tidbcloud/v7.5-performance-benchmarking-with-tpcc)
+- [TiDB Cloud TPC-C Performance Test Report for TiDB v8.1.0](https://docs.pingcap.com/tidbcloud/v8.1-performance-benchmarking-with-tpcc)
+- [TiDB Memory Control](/configure-memory-usage.md)
+- [Troubleshoot TiDB OOM Issues](/troubleshoot-tidb-oom.md)
+- [Use Dumpling to Export Data](/dumpling-overview.md)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+
+### tidb_dml_batch_size
+
+Referenced in:
+
+- [LOAD DATA](/sql-statements/sql-statement-load-data.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_dml_batch_size)
+- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+- [TiDB 5.0 Release Notes](/releases/release-5.0.0.md)
+- [TiDB 4.0 Beta Release Notes](/releases/release-4.0.0-beta.md)
+
+### tidb_dml_type
+
+Referenced in:
+
+- [IMPORT INTO vs. TiDB Lightning](/tidb-lightning/import-into-vs-tidb-lightning.md)
+- [Identify Expensive Queries](/identify-expensive-queries.md)
+- [System Variables](/system-variables.md#tidb_dml_type-new-in-v800)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB Features](/basic-features.md)
+- [TiDB Memory Control](/configure-memory-usage.md)
+- [tidb-performance-tuning-config](/tidb-performance-tuning-config.md)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md)
+- [TiDB 8.1.0 Release Notes](/releases/release-8.1.0.md)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+
+### tidb_enable_1pc
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_enable_1pc-new-in-v50)
+- [TiDB Cluster Management FAQs](/faq/manage-cluster-faq.md)
+- [TiDB Features](/basic-features.md)
+- [Transactions](/transaction-overview.md)
+- [TiDB 5.0 Release Notes](/releases/release-5.0.0.md)
+
+### tidb_enable_analyze_snapshot
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_analyze_snapshot-new-in-v620)
+- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md)
+
+### tidb_enable_async_commit
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_enable_async_commit-new-in-v50)
+- [TiDB Cluster Management FAQs](/faq/manage-cluster-faq.md)
+- [TiDB Features](/basic-features.md)
+- [Transactions](/transaction-overview.md)
+- [TiDB 5.0 Release Notes](/releases/release-5.0.0.md)
+- [TiDB 5.0 RC Release Notes](/releases/release-5.0.0-rc.md)
+
+### tidb_enable_async_merge_global_stats
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_async_merge_global_stats-new-in-v750)
+- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md)
+- [TiDB 8.2.0 Release Notes](/releases/release-8.2.0.md)
+- [TiDB 8.1.1 Release Notes](/releases/release-8.1.1.md)
+- [TiDB 7.5.3 Release Notes](/releases/release-7.5.3.md)
+- [TiDB 7.5.0 Release Notes](/releases/release-7.5.0.md)
+
+### tidb_enable_auto_analyze
+
+Referenced in:
+
+- [Introduction to Statistics](/statistics.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [SQL FAQs](/faq/sql-faq.md)
+- [System Variables](/system-variables.md#tidb_enable_auto_analyze-new-in-v610)
+- [Use PLAN REPLAYER to Save and Restore the On-Site Information of a Cluster](/sql-plan-replayer.md)
+- [tidb-performance-tuning-config](/tidb-performance-tuning-config.md)
+- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md)
+
+### tidb_enable_auto_analyze_priority_queue
+
+Referenced in:
+
+- [Introduction to Statistics](/statistics.md)
+- [System Variables](/system-variables.md#tidb_enable_auto_analyze_priority_queue-new-in-v800)
+- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md)
+- [TiDB 8.2.0 Release Notes](/releases/release-8.2.0.md)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+
+### tidb_enable_auto_increment_in_generated
+
+Referenced in:
+
+- [CREATE INDEX](/sql-statements/sql-statement-create-index.md)
+- [System Variables](/system-variables.md#tidb_enable_auto_increment_in_generated)
+- [TiDB 5.2 Release Notes](/releases/release-5.2.0.md)
+
+### tidb_enable_batch_dml
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_batch_dml)
+- [TiDB Cloud Release Notes in 2022](https://docs.pingcap.com/tidbcloud/release-notes-2022)
+
+### tidb_enable_cascades_planner
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_enable_cascades_planner)
+- [TiDB Features](/basic-features.md)
+- [TiDB 3.0 Beta Release Notes](/releases/release-3.0-beta.md)
+
+### tidb_enable_check_constraint
+
+Referenced in:
+
+- [CHECK\_CONSTRAINTS](/information-schema/information-schema-check-constraints.md)
+- [Constraints](/constraints.md)
+- [System Variables](/system-variables.md#tidb_enable_check_constraint-new-in-v720)
+- [TIDB\_CHECK\_CONSTRAINTS](/information-schema/information-schema-tidb-check-constraints.md)
+- [TiDB 7.2.0 Release Notes](/releases/release-7.2.0.md)
+
+### tidb_enable_chunk_rpc
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_enable_chunk_rpc-new-in-v40)
+
+### tidb_enable_clustered_index
+
+Referenced in:
+
+- [Clustered Indexes](/clustered-indexes.md)
+- [Create a Table](/develop/dev-guide-create-table.md)
+- [System Variables](/system-variables.md#tidb_enable_clustered_index-new-in-v50)
+- [TiDB Backup & Restore Overview](/br/backup-and-restore-overview.md)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB Database Schema Design Overview](/develop/dev-guide-schema-design-overview.md)
+- [TiDB Lightning Configuration](/tidb-lightning/tidb-lightning-configuration.md)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+- [TiDB 5.0 Release Notes](/releases/release-5.0.0.md)
+- [TiDB 5.0 RC Release Notes](/releases/release-5.0.0-rc.md)
+
+### tidb_enable_collect_execution_info
+
+Referenced in:
+
+- [Identify Slow Queries](/identify-slow-queries.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [Modify Configuration Dynamically](/dynamic-config.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_enable_collect_execution_info)
+- [TIDB_INDEX_USAGE](/information-schema/information-schema-tidb-index-usage.md)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md)
+- [TiDB 7.5.1 Release Notes](/releases/release-7.5.1.md)
+- [TiDB 4.0.2 Release Notes](/releases/release-4.0.2.md)
+
+### tidb_enable_column_tracking
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_column_tracking-new-in-v540)
+- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md)
+- [TiDB 8.2.0 Release Notes](/releases/release-8.2.0.md)
+- [TiDB 5.4 Release Notes](/releases/release-5.4.0.md)
+
+### tidb_enable_ddl
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [Modify Configuration Dynamically](/dynamic-config.md)
+- [System Variables](/system-variables.md#tidb_enable_ddl-new-in-v630)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [Topology Configuration File for TiDB Deployment Using TiUP](/tiup/tiup-cluster-topology-reference.md)
+
+### tidb_enable_dist_task
+
+Referenced in:
+
+- [ADMIN ALTER DDL JOBS](/sql-statements/sql-statement-admin-alter-ddl.md)
+- [ADMIN SHOW DDL [JOBS|JOB QUERIES]](/sql-statements/sql-statement-admin-show-ddl.md)
+- [IMPORT INTO](/sql-statements/sql-statement-import-into.md)
+- [System Variables](/system-variables.md#tidb_enable_dist_task-new-in-v710)
+- [TiDB Distributed eXecution Framework (DXF)](/tidb-distributed-execution-framework.md)
+- [TiDB Global Sort](/tidb-global-sort.md)
+- [TiDB Smooth Upgrade](/smooth-upgrade-tidb.md)
+- [TiDB 8.1.0 Release Notes](/releases/release-8.1.0.md)
+- [TiDB 7.5.0 Release Notes](/releases/release-7.5.0.md)
+- [TiDB 7.3.0 Release Notes](/releases/release-7.3.0.md)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### tidb_enable_enhanced_security
+
+Referenced in:
+
+- [BACKUP](/sql-statements/sql-statement-backup.md)
+- [IMPORT INTO](/sql-statements/sql-statement-import-into.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_enable_enhanced_security)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB Dashboard User Management](/dashboard/dashboard-user.md)
+- [TiDB Features](/basic-features.md)
+- [TiDB 5.1 Release Notes](/releases/release-5.1.0.md)
+
+### tidb_enable_exchange_partition
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_exchange_partition)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+
+### tidb_enable_extended_stats
+
+Referenced in:
+
+- [Introduction to Extended Statistics](/extended-statistics.md)
+- [System Variables](/system-variables.md#tidb_enable_extended_stats)
+
+### tidb_enable_external_ts_read
+
+Referenced in:
+
+- [DR Solution Based on Primary and Secondary Clusters](/dr-secondary-cluster.md)
+- [Read Historical Data Using the `tidb_external_ts` Variable](/tidb-external-ts.md)
+- [System Variables](/system-variables.md#tidb_enable_external_ts_read-new-in-v640)
+- [Upstream and Downstream Clusters Data Validation and Snapshot Read](/ticdc/ticdc-upstream-downstream-check.md)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+
+### tidb_enable_fast_analyze
+
+Referenced in:
+
+- [Introduction to Extended Statistics](/extended-statistics.md)
+- [System Variables](/system-variables.md#tidb_enable_fast_analyze)
+- [TiDB Features](/basic-features.md)
+- [TiDB 7.5.0 Release Notes](/releases/release-7.5.0.md)
+- [TiDB 7.3.0 Release Notes](/releases/release-7.3.0.md)
+- [TiDB 3.0.0-rc.1 Release Notes](/releases/release-3.0.0-rc.1.md)
+
+### tidb_enable_fast_create_table
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_fast_create_table-new-in-v800)
+- [TiDB Accelerated Table Creation](/accelerated-table-creation.md)
+- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md)
+- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+
+### tidb_enable_fast_table_check
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_fast_table_check-new-in-v720)
+- [TiDB 7.2.0 Release Notes](/releases/release-7.2.0.md)
+
+### tidb_enable_foreign_key
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_foreign_key-new-in-v630)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+
+### tidb_enable_gc_aware_memory_track
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_enable_gc_aware_memory_track)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### tidb_enable_global_index
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_global_index-new-in-v760)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md)
+- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md)
+
+### tidb_enable_gogc_tuner
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_enable_gogc_tuner-new-in-v640)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+
+### tidb_enable_historical_stats
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_historical_stats)
+- [Use PLAN REPLAYER to Save and Restore the On-Site Information of a Cluster](/sql-plan-replayer.md)
+- [TiDB 8.2.0 Release Notes](/releases/release-8.2.0.md)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+
+### tidb_enable_historical_stats_for_capture
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_historical_stats_for_capture)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+
+### tidb_enable_index_merge
+
+Referenced in:
+
+- [Explain Statements Using Index Merge](/explain-index-merge.md)
+- [Index Selection](/choose-index.md)
+- [Optimizer Hints](/optimizer-hints.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_enable_index_merge-new-in-v40)
+- [TiDB 5.4 Release Notes](/releases/release-5.4.0.md)
+
+### tidb_enable_index_merge_join
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_index_merge_join)
+
+### tidb_enable_inl_join_inner_multi_pattern
+
+Referenced in:
+
+- [Optimizer Hints](/optimizer-hints.md)
+- [System Variables](/system-variables.md#tidb_enable_inl_join_inner_multi_pattern-new-in-v700)
+- [tidb-performance-tuning-config](/tidb-performance-tuning-config.md)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+
+### tidb_enable_instance_plan_cache
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_instance_plan_cache-new-in-v840)
+- [TiDB Features](/basic-features.md)
+- [tidb-performance-tuning-config](/tidb-performance-tuning-config.md)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+
+### tidb_enable_lazy_cursor_fetch
+
+Referenced in:
+
+- [Best Practices for Developing Java Applications with TiDB](/best-practices/java-app-best-practices.md)
+- [Connection Pools and Connection Parameters](/develop/dev-guide-connection-parameters.md)
+- [System Variables](/system-variables.md#tidb_enable_lazy_cursor_fetch-new-in-v830)
+- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md)
+
+### tidb_enable_legacy_instance_scope
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_legacy_instance_scope-new-in-v600)
+
+### tidb_enable_list_partition
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_list_partition-new-in-v50)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md)
+- [TiDB 5.0 Release Notes](/releases/release-5.0.0.md)
+
+### tidb_enable_local_txn
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_enable_local_txn)
+
+### tidb_enable_metadata_lock
+
+Referenced in:
+
+- [Metadata Lock](/metadata-lock.md)
+- [System Variables](/system-variables.md#tidb_enable_metadata_lock-new-in-v630)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+
+### tidb_enable_mutation_checker
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_mutation_checker-new-in-v600)
+- [Troubleshoot Inconsistency Between Data and Indexes](/troubleshoot-data-inconsistency-errors.md)
+- [TiDB 6.0.0 Release Notes](/releases/release-6.0.0-dmr.md)
+
+### tidb_enable_new_cost_interface
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_new_cost_interface-new-in-v620)
+- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md)
+
+### tidb_enable_new_only_full_group_by_check
+
+Referenced in:
+
+- [SQL Mode](/sql-mode.md)
+- [System Variables](/system-variables.md#tidb_enable_new_only_full_group_by_check-new-in-v610)
+- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md)
+
+### tidb_enable_non_prepared_plan_cache
+
+Referenced in:
+
+- [SQL Non-Prepared Execution Plan Cache](/sql-non-prepared-plan-cache.md)
+- [System Variables](/system-variables.md#tidb_enable_non_prepared_plan_cache)
+- [tidb-performance-tuning-config](/tidb-performance-tuning-config.md)
+- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md)
+- [TiDB 7.2.0 Release Notes](/releases/release-7.2.0.md)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+
+### tidb_enable_non_prepared_plan_cache_for_dml
+
+Referenced in:
+
+- [SQL Non-Prepared Execution Plan Cache](/sql-non-prepared-plan-cache.md)
+- [System Variables](/system-variables.md#tidb_enable_non_prepared_plan_cache_for_dml-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### tidb_enable_noop_functions
+
+Referenced in:
+
+- [Information Functions](/functions-and-operators/information-functions.md)
+- [SELECT](/sql-statements/sql-statement-select.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_enable_noop_functions-new-in-v40)
+- [TiDB Pessimistic Transaction Mode](/pessimistic-transaction.md)
+- [TiDB 5.3 Release Notes](/releases/release-5.3.0.md)
+- [TiDB 5.1 Release Notes](/releases/release-5.1.0.md)
+- [TiDB 5.0 Release Notes](/releases/release-5.0.0.md)
+
+### tidb_enable_noop_variables
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_noop_variables-new-in-v620)
+- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md)
+
+### tidb_enable_null_aware_anti_join
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_null_aware_anti_join-new-in-v630)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+
+### tidb_enable_ordered_result_mode
+
+Referenced in:
+
+- [SQL FAQs](/faq/sql-faq.md)
+- [System Variables](/system-variables.md#tidb_enable_ordered_result_mode)
+- [TiDB 7.1.3 Release Notes](/releases/release-7.1.3.md)
+- [TiDB 6.5.6 Release Notes](/releases/release-6.5.6.md)
+
+### tidb_enable_outer_join_reorder
+
+Referenced in:
+
+- [Introduction to Join Reorder](/join-reorder.md)
+- [System Variables](/system-variables.md#tidb_enable_outer_join_reorder-new-in-v610)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md)
+- [TiDB 6.1.1 Release Notes](/releases/release-6.1.1.md)
+- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md)
+
+### tidb_enable_paging
+
+Referenced in:
+
+- [SQL FAQs](/faq/sql-faq.md)
+- [System Variables](/system-variables.md#tidb_enable_paging-new-in-v540)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md)
+- [TiDB 5.4 Release Notes](/releases/release-5.4.0.md)
+
+### tidb_enable_parallel_apply
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_parallel_apply-new-in-v50)
+- [TiDB 7.3.0 Release Notes](/releases/release-7.3.0.md)
+- [TiDB 7.1.1 Release Notes](/releases/release-7.1.1.md)
+- [TiDB 6.5.4 Release Notes](/releases/release-6.5.4.md)
+- [TiDB 5.4.1 Release Notes](/releases/release-5.4.1.md)
+
+### tidb_enable_parallel_hashagg_spill
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_parallel_hashagg_spill-new-in-v800)
+- [TiDB Memory Control](/configure-memory-usage.md)
+- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md)
+- [TiDB 8.2.0 Release Notes](/releases/release-8.2.0.md)
+- [TiDB 8.1.1 Release Notes](/releases/release-8.1.1.md)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+
+### tidb_enable_pipelined_window_function
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_pipelined_window_function)
+- [Window Functions](/functions-and-operators/window-functions.md)
+
+### tidb_enable_plan_cache_for_param_limit
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_plan_cache_for_param_limit-new-in-v660)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+
+### tidb_enable_plan_cache_for_subquery
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_plan_cache_for_subquery-new-in-v700)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+
+### tidb_enable_plan_replayer_capture
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_plan_replayer_capture)
+- [Use PLAN REPLAYER to Save and Restore the On-Site Information of a Cluster](/sql-plan-replayer.md)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+
+### tidb_enable_plan_replayer_continuous_capture
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_plan_replayer_continuous_capture-new-in-v700)
+- [Use PLAN REPLAYER to Save and Restore the On-Site Information of a Cluster](/sql-plan-replayer.md)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+
+### tidb_enable_prepared_plan_cache
+
+Referenced in:
+
+- [How to Test TiDB Using Sysbench](/benchmark/benchmark-tidb-using-sysbench.md)
+- [SQL Prepared Execution Plan Cache](/sql-prepared-plan-cache.md)
+- [System Variables](/system-variables.md#tidb_enable_prepared_plan_cache-new-in-v610)
+- [TiDB Cloud Release Notes in 2022](https://docs.pingcap.com/tidbcloud/release-notes-2022)
+- [TiDB Dashboard FAQs](/dashboard/dashboard-faq.md)
+- [TiDB 7.5.1 Release Notes](/releases/release-7.5.1.md)
+- [TiDB 7.1.4 Release Notes](/releases/release-7.1.4.md)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md)
+
+### tidb_enable_prepared_plan_cache_memory_monitor
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_prepared_plan_cache_memory_monitor-new-in-v640)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+
+### tidb_enable_pseudo_for_outdated_stats
+
+Referenced in:
+
+- [SQL FAQs](/faq/sql-faq.md)
+- [System Variables](/system-variables.md#tidb_enable_pseudo_for_outdated_stats-new-in-v530)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+- [TiDB 5.3 Release Notes](/releases/release-5.3.0.md)
+
+### tidb_enable_rate_limit_action
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_rate_limit_action)
+- [TiDB Memory Control](/configure-memory-usage.md)
+- [Troubleshoot TiDB OOM Issues](/troubleshoot-tidb-oom.md)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+
+### tidb_enable_resource_control
+
+Referenced in:
+
+- [ALTER RESOURCE GROUP](/sql-statements/sql-statement-alter-resource-group.md)
+- [CREATE RESOURCE GROUP](/sql-statements/sql-statement-create-resource-group.md)
+- [DROP RESOURCE GROUP](/sql-statements/sql-statement-drop-resource-group.md)
+- [Error Codes and Troubleshooting](/error-codes.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [SET RESOURCE GROUP](/sql-statements/sql-statement-set-resource-group.md)
+- [System Variables](/system-variables.md#tidb_enable_resource_control-new-in-v660)
+- [TiKV Configuration File](/tikv-configuration-file.md)
+- [Use Resource Control to Achieve Resource Isolation](/tidb-resource-control.md)
+- [`CALIBRATE RESOURCE`](/sql-statements/sql-statement-calibrate-resource.md)
+- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+
+### tidb_enable_reuse_chunk
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_reuse_chunk-new-in-v640)
+- [TiDB 6.5.1 Release Notes](/releases/release-6.5.1.md)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+
+### tidb_enable_row_level_checksum
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_row_level_checksum-new-in-v710)
+- [TiCDC Data Integrity Validation for Single-Row Data](/ticdc/ticdc-integrity-check.md)
+- [TiDB Specific Functions](/functions-and-operators/tidb-functions.md)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+- [TiDB 7.5.1 Release Notes](/releases/release-7.5.1.md)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### tidb_enable_shared_lock_promotion
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_shared_lock_promotion-new-in-v830)
+- [TiDB Pessimistic Transaction Mode](/pessimistic-transaction.md)
+- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md)
+
+### tidb_enable_slow_log
+
+Referenced in:
+
+- [Identify Slow Queries](/identify-slow-queries.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [Modify Configuration Dynamically](/dynamic-config.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [Slow Queries Page of TiDB Dashboard](/dashboard/dashboard-slow-query.md)
+- [System Variables](/system-variables.md#tidb_enable_slow_log)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+
+### tidb_enable_stats_owner
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_stats_owner-new-in-v840)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+
+### tidb_enable_stmt_summary
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [SQL Plan Management (SPM)](/sql-plan-management.md)
+- [Statement Summary Tables](/statement-summary-tables.md)
+- [System Variables](/system-variables.md#tidb_enable_stmt_summary-new-in-v304)
+- [TiDB 3.0.4 Release Notes](/releases/release-3.0.4.md)
+
+### tidb_enable_strict_double_type_check
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_strict_double_type_check-new-in-v50)
+- [TiDB 5.0 Release Notes](/releases/release-5.0.0.md)
+
+### tidb_enable_table_partition
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_enable_table_partition)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+- [TiDB 4.0.13 Release Notes](/releases/release-4.0.13.md)
+- [TiDB 3.0.8 Release Notes](/releases/release-3.0.8.md)
+
+### tidb_enable_telemetry
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_telemetry-new-in-v402-and-deprecated-in-v810)
+- [TiDB 8.1.0 Release Notes](/releases/release-8.1.0.md)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+- [TiDB 6.5.1 Release Notes](/releases/release-6.5.1.md)
+- [TiDB 6.1.5 Release Notes](/releases/release-6.1.5.md)
+
+### tidb_enable_tiflash_read_for_write_stmt
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_enable_tiflash_read_for_write_stmt-new-in-v630)
+- [Use TiDB to Read TiFlash Replicas](/tiflash/use-tidb-to-read-tiflash.md)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+
+### tidb_enable_tmp_storage_on_oom
+
+Referenced in:
+
+- [Best Practices for Developing Java Applications with TiDB](/best-practices/java-app-best-practices.md)
+- [Connection Pools and Connection Parameters](/develop/dev-guide-connection-parameters.md)
+- [Enable Encryption for Disk Spill](/enable-disk-spill-encrypt.md)
+- [Explain Statements That Use Joins](/explain-joins.md)
+- [System Variables](/system-variables.md#tidb_enable_tmp_storage_on_oom)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB Memory Control](/configure-memory-usage.md)
+
+### tidb_enable_top_sql
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_enable_top_sql-new-in-v540)
+- [TiDB Dashboard Top SQL Page](/dashboard/top-sql.md)
+- [TiDB 5.4 Release Notes](/releases/release-5.4.0.md)
+
+### tidb_enable_tso_follower_proxy
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [PD Microservices](/pd-microservices.md)
+- [System Variables](/system-variables.md#tidb_enable_tso_follower_proxy-new-in-v530)
+- [TiDB Features](/basic-features.md)
+- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md)
+- [TiDB 5.3 Release Notes](/releases/release-5.3.0.md)
+
+### tidb_enable_unsafe_substitute
+
+Referenced in:
+
+- [Generated Columns](/generated-columns.md)
+- [System Variables](/system-variables.md#tidb_enable_unsafe_substitute-new-in-v630)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+
+### tidb_enable_vectorized_expression
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_enable_vectorized_expression-new-in-v40)
+- [TiDB 5.4.1 Release Notes](/releases/release-5.4.1.md)
+- [TiDB 5.2.4 Release Notes](/releases/release-5.2.4.md)
+- [TiDB 5.1.4 Release Notes](/releases/release-5.1.4.md)
+- [TiDB 5.0.6 Release Notes](/releases/release-5.0.6.md)
+- [TiDB 4.0.16 Release Notes](/releases/release-4.0.16.md)
+
+### tidb_enable_window_function
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_enable_window_function)
+- [Window Functions](/functions-and-operators/window-functions.md)
+- [TiDB 3.0.8 Release Notes](/releases/release-3.0.8.md)
+
+### tidb_enforce_mpp
+
+Referenced in:
+
+- [Explore HTAP](/explore-htap.md)
+- [System Variables](/system-variables.md#tidb_enforce_mpp-new-in-v51)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiFlash Query Result Materialization](/tiflash/tiflash-results-materialization.md)
+- [Troubleshoot a TiFlash Cluster](/tiflash/troubleshoot-tiflash.md)
+- [Tune TiFlash Performance](/tiflash/tune-tiflash-performance.md)
+- [Usage Scenarios of Stale Read](/stale-read.md)
+- [Use TiFlash MPP Mode](/tiflash/use-tiflash-mpp-mode.md)
+- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md)
+- [TiDB 5.4.2 Release Notes](/releases/release-5.4.2.md)
+- [TiDB 5.1.5 Release Notes](/releases/release-5.1.5.md)
+- [TiDB 5.1 Release Notes](/releases/release-5.1.0.md)
+- [TiDB 5.0.4 Release Notes](/releases/release-5.0.4.md)
+
+### tidb_evolve_plan_baselines
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [SQL Plan Management (SPM)](/sql-plan-management.md)
+- [System Variables](/system-variables.md#tidb_evolve_plan_baselines-new-in-v40)
+- [TiDB 5.2 Release Notes](/releases/release-5.2.0.md)
+
+### tidb_evolve_plan_task_end_time
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [SQL Plan Management (SPM)](/sql-plan-management.md)
+- [System Variables](/system-variables.md#tidb_evolve_plan_task_end_time-new-in-v40)
+
+### tidb_evolve_plan_task_max_time
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [SQL Plan Management (SPM)](/sql-plan-management.md)
+- [System Variables](/system-variables.md#tidb_evolve_plan_task_max_time-new-in-v40)
+
+### tidb_evolve_plan_task_start_time
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [SQL Plan Management (SPM)](/sql-plan-management.md)
+- [System Variables](/system-variables.md#tidb_evolve_plan_task_start_time-new-in-v40)
+
+### tidb_executor_concurrency
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_executor_concurrency-new-in-v50)
+- [Troubleshoot TiDB OOM Issues](/troubleshoot-tidb-oom.md)
+- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md)
+- [TiDB 8.2.0 Release Notes](/releases/release-8.2.0.md)
+- [TiDB 5.0 Release Notes](/releases/release-5.0.0.md)
+
+### tidb_expensive_query_time_threshold
+
+Referenced in:
+
+- [Identify Expensive Queries](/identify-expensive-queries.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [Modify Configuration Dynamically](/dynamic-config.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_expensive_query_time_threshold)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+
+### tidb_expensive_txn_time_threshold
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_expensive_txn_time_threshold-new-in-v720)
+- [TiDB 7.2.0 Release Notes](/releases/release-7.2.0.md)
+
+### tidb_external_ts
+
+Referenced in:
+
+- [DR Solution Based on Primary and Secondary Clusters](/dr-secondary-cluster.md)
+- [Read Historical Data Using the `tidb_external_ts` Variable](/tidb-external-ts.md)
+- [System Variables](/system-variables.md#tidb_external_ts-new-in-v640)
+- [Upstream and Downstream Clusters Data Validation and Snapshot Read](/ticdc/ticdc-upstream-downstream-check.md)
+- [Usage Scenarios of Stale Read](/stale-read.md)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+
+### tidb_force_priority
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [Modify Configuration Dynamically](/dynamic-config.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [SQL FAQs](/faq/sql-faq.md)
+- [System Variables](/system-variables.md#tidb_force_priority)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB 2.1.5 Release Notes](/releases/release-2.1.5.md)
+- [TiDB 2.1 RC3 Release Notes](/releases/release-2.1-rc.3.md)
+
+### tidb_gc_concurrency
+
+Referenced in:
+
+- [Garbage Collection Configuration](/garbage-collection-configuration.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_gc_concurrency-new-in-v50)
+- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md)
+- [TiDB 5.0 Release Notes](/releases/release-5.0.0.md)
+
+### tidb_gc_enable
+
+Referenced in:
+
+- [DR Solution Based on Primary and Secondary Clusters](/dr-secondary-cluster.md)
+- [Garbage Collection Configuration](/garbage-collection-configuration.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [Migrate Data from TiDB to MySQL-compatible Databases](/migrate-from-tidb-to-mysql.md)
+- [Migrate from One TiDB Cluster to Another TiDB Cluster](/migrate-from-tidb-to-tidb.md)
+- [Migrate from TiDB Self-Managed to TiDB Cloud](https://docs.pingcap.com/tidbcloud/migrate-from-op-tidb)
+- [Replicate Data Between Primary and Secondary Clusters](/replicate-between-primary-and-secondary-clusters.md)
+- [System Variables](/system-variables.md#tidb_gc_enable-new-in-v50)
+- [TiDB Troubleshooting Map](/tidb-troubleshooting-map.md)
+- [TiDB 5.0 Release Notes](/releases/release-5.0.0.md)
+
+### tidb_gc_life_time
+
+Referenced in:
+
+- [Error Codes and Troubleshooting](/error-codes.md)
+- [FLASHBACK CLUSTER](/sql-statements/sql-statement-flashback-cluster.md)
+- [FLASHBACK DATABASE](/sql-statements/sql-statement-flashback-database.md)
+- [FLASHBACK TABLE](/sql-statements/sql-statement-flashback-table.md)
+- [Garbage Collection Configuration](/garbage-collection-configuration.md)
+- [Read Historical Data Using the System Variable `tidb_snapshot`](/read-historical-data.md)
+- [Replicate Data to Kafka](/ticdc/ticdc-sink-to-kafka.md)
+- [SQL FAQs](/faq/sql-faq.md)
+- [Sink to MySQL](https://docs.pingcap.com/tidbcloud/changefeed-sink-to-mysql)
+- [Sink to TiDB Cloud](https://docs.pingcap.com/tidbcloud/changefeed-sink-to-tidb-cloud)
+- [Stale Read](/develop/dev-guide-use-stale-read.md)
+- [System Variables](/system-variables.md#tidb_gc_life_time-new-in-v50)
+- [TiCDC FAQs](/ticdc/ticdc-faq.md)
+- [TiDB Incremental Backup and Restore Guide](/br/br-incremental-guide.md)
+- [TiDB Troubleshooting Map](/tidb-troubleshooting-map.md)
+- [TiKV MVCC In-Memory Engine](/tikv-in-memory-engine.md)
+- [Timeouts in TiDB](/develop/dev-guide-timeouts-in-tidb.md)
+- [Use Dumpling to Export Data](/dumpling-overview.md)
+- [TiDB 6.1.1 Release Notes](/releases/release-6.1.1.md)
+- [TiDB 5.0 Release Notes](/releases/release-5.0.0.md)
+
+### tidb_gc_max_wait_time
+
+Referenced in:
+
+- [Garbage Collection Configuration](/garbage-collection-configuration.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_gc_max_wait_time-new-in-v610)
+- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md)
+
+### tidb_gc_run_interval
+
+Referenced in:
+
+- [Garbage Collection Configuration](/garbage-collection-configuration.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_gc_run_interval-new-in-v50)
+- [TiDB 5.0 Release Notes](/releases/release-5.0.0.md)
+
+### tidb_gc_scan_lock_mode
+
+Referenced in:
+
+- [GC Overview](/garbage-collection-overview.md)
+- [Garbage Collection Configuration](/garbage-collection-configuration.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_gc_scan_lock_mode-new-in-v50)
+- [TiDB Features](/basic-features.md)
+- [TiDB 5.0.4 Release Notes](/releases/release-5.0.4.md)
+- [TiDB 5.0 Release Notes](/releases/release-5.0.0.md)
+
+### tidb_general_log
+
+Referenced in:
+
+- [Configuration Options](/command-line-flags-for-tidb-configuration.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_general_log)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB Data Migration FAQs](/dm/dm-faq.md)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+
+### tidb_generate_binary_plan
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_generate_binary_plan-new-in-v620)
+- [TiDB Specific Functions](/functions-and-operators/tidb-functions.md)
+- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md)
+
+### tidb_gogc_tuner_max_value
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_gogc_tuner_max_value-new-in-v750)
+- [TiDB 7.5.5 Release Notes](/releases/release-7.5.5.md)
+- [TiDB 7.5.0 Release Notes](/releases/release-7.5.0.md)
+
+### tidb_gogc_tuner_min_value
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_gogc_tuner_min_value-new-in-v750)
+- [TiDB 7.5.5 Release Notes](/releases/release-7.5.5.md)
+- [TiDB 7.5.0 Release Notes](/releases/release-7.5.0.md)
+
+### tidb_gogc_tuner_threshold
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_gogc_tuner_threshold-new-in-v640)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+- [TiDB 7.1.4 Release Notes](/releases/release-7.1.4.md)
+- [TiDB 6.5.9 Release Notes](/releases/release-6.5.9.md)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+
+### tidb_guarantee_linearizability
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_guarantee_linearizability-new-in-v50)
+- [tidb-performance-tuning-config](/tidb-performance-tuning-config.md)
+
+### tidb_hash_exchange_with_new_collation
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_hash_exchange_with_new_collation)
+
+### tidb_hash_join_concurrency
+
+Referenced in:
+
+- [Analyze Slow Queries](/analyze-slow-queries.md)
+- [Best Practices for Three-Node Hybrid Deployment](/best-practices/three-nodes-hybrid-deployment.md)
+- [Explain Statements That Use Joins](/explain-joins.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_hash_join_concurrency)
+
+### tidb_hash_join_version
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_hash_join_version-new-in-v840)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+
+### tidb_hashagg_final_concurrency
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_hashagg_final_concurrency)
+
+### tidb_hashagg_partial_concurrency
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_hashagg_partial_concurrency)
+
+### tidb_historical_stats_duration
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_historical_stats_duration-new-in-v660)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+
+### tidb_idle_transaction_timeout
+
+Referenced in:
+
+- [Connection Pools and Connection Parameters](/develop/dev-guide-connection-parameters.md)
+- [System Variables](/system-variables.md#tidb_idle_transaction_timeout-new-in-v760)
+- [TiDB Cluster Management FAQs](/faq/manage-cluster-faq.md)
+- [TiDB Features](/basic-features.md)
+- [Timeouts in TiDB](/develop/dev-guide-timeouts-in-tidb.md)
+- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md)
+
+### tidb_ignore_prepared_cache_close_stmt
+
+Referenced in:
+
+- [Performance Analysis and Tuning](/performance-tuning-methods.md)
+- [Performance Tuning Practices for OLTP Scenarios](/performance-tuning-practices.md)
+- [SQL Prepared Execution Plan Cache](/sql-prepared-plan-cache.md)
+- [System Variables](/system-variables.md#tidb_ignore_prepared_cache_close_stmt-new-in-v600)
+- [tidb-performance-tuning-config](/tidb-performance-tuning-config.md)
+- [TiDB 6.0.0 Release Notes](/releases/release-6.0.0-dmr.md)
+
+### tidb_index_join_batch_size
+
+Referenced in:
+
+- [Explain Statements That Use Joins](/explain-joins.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_index_join_batch_size)
+
+### tidb_index_join_double_read_penalty_cost_rate
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_index_join_double_read_penalty_cost_rate-new-in-v660)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+
+### tidb_index_lookup_concurrency
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_index_lookup_concurrency)
+- [TiDB Best Practices](/best-practices/tidb-best-practices.md)
+
+### tidb_index_lookup_join_concurrency
+
+Referenced in:
+
+- [Best Practices for Three-Node Hybrid Deployment](/best-practices/three-nodes-hybrid-deployment.md)
+- [Explain Statements That Use Joins](/explain-joins.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_index_lookup_join_concurrency)
+
+### tidb_index_lookup_size
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_index_lookup_size)
+- [TiDB Best Practices](/best-practices/tidb-best-practices.md)
+
+### tidb_index_merge_intersection_concurrency
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_index_merge_intersection_concurrency-new-in-v650)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### tidb_index_serial_scan_concurrency
+
+Referenced in:
+
+- [Introduction to Statistics](/statistics.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_index_serial_scan_concurrency)
+- [TiDB Best Practices](/best-practices/tidb-best-practices.md)
+- [TiDB Cloud TPC-C Performance Test Report for TiDB v6.5.6](https://docs.pingcap.com/tidbcloud/v6.5-performance-benchmarking-with-tpcc)
+- [TiDB Cloud TPC-C Performance Test Report for TiDB v7.1.3](https://docs.pingcap.com/tidbcloud/v7.1-performance-benchmarking-with-tpcc)
+- [TiDB Cloud TPC-C Performance Test Report for TiDB v7.5.0](https://docs.pingcap.com/tidbcloud/v7.5-performance-benchmarking-with-tpcc)
+- [TiDB Cloud TPC-C Performance Test Report for TiDB v8.1.0](https://docs.pingcap.com/tidbcloud/v8.1-performance-benchmarking-with-tpcc)
+- [Troubleshoot TiDB OOM Issues](/troubleshoot-tidb-oom.md)
+
+### tidb_init_chunk_size
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_init_chunk_size)
+- [TiDB Transaction Isolation Levels](/transaction-isolation-levels.md)
+- [TiDB 3.0 Beta Release Notes](/releases/release-3.0-beta.md)
+
+### tidb_instance_plan_cache_max_size
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_instance_plan_cache_max_size-new-in-v840)
+- [tidb-performance-tuning-config](/tidb-performance-tuning-config.md)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+
+### tidb_instance_plan_cache_reserved_percentage
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_instance_plan_cache_reserved_percentage-new-in-v840)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+
+### tidb_isolation_read_engines
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [Stress Test TiDB Using TiUP Bench Component](/tiup/tiup-bench.md)
+- [System Variables](/system-variables.md#tidb_isolation_read_engines-new-in-v40)
+- [TiFlash Compatibility Notes](/tiflash/tiflash-compatibility.md)
+- [Use FastScan](/tiflash/use-fastscan.md)
+- [Use TiDB to Read TiFlash Replicas](/tiflash/use-tidb-to-read-tiflash.md)
+- [TiDB 4.0.2 Release Notes](/releases/release-4.0.2.md)
+
+### tidb_last_ddl_info
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_last_ddl_info-new-in-v600)
+
+### tidb_last_plan_replayer_token
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_last_plan_replayer_token-new-in-v630)
+- [Use PLAN REPLAYER to Save and Restore the On-Site Information of a Cluster](/sql-plan-replayer.md)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+
+### tidb_last_query_info
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_last_query_info-new-in-v4014)
+- [Use Resource Control to Achieve Resource Isolation](/tidb-resource-control.md)
+- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md)
+- [TiDB 7.5.1 Release Notes](/releases/release-7.5.1.md)
+
+### tidb_last_txn_info
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_last_txn_info-new-in-v409)
+
+### tidb_load_based_replica_read_threshold
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_load_based_replica_read_threshold-new-in-v700)
+- [Troubleshoot Hotspot Issues](/troubleshoot-hot-spot-issues.md)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+
+### tidb_load_binding_timeout
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_load_binding_timeout-new-in-v800)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+
+### tidb_lock_unchanged_keys
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_lock_unchanged_keys-new-in-v711-and-v730)
+- [TiDB 7.3.0 Release Notes](/releases/release-7.3.0.md)
+- [TiDB 7.1.1 Release Notes](/releases/release-7.1.1.md)
+
+### tidb_log_file_max_days
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_log_file_max_days-new-in-v530)
+- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md)
+
+### tidb_low_resolution_tso
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_low_resolution_tso)
+- [tidb-performance-tuning-config](/tidb-performance-tuning-config.md)
+- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md)
+- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+- [TiDB 3.0.0-rc.2 Release Notes](/releases/release-3.0.0-rc.2.md)
+- [TiDB 3.0 GA Release Notes](/releases/release-3.0-ga.md)
+
+### tidb_low_resolution_tso_update_interval
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_low_resolution_tso_update_interval-new-in-v800)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+
+### tidb_max_auto_analyze_time
+
+Referenced in:
+
+- [Introduction to Statistics](/statistics.md)
+- [System Variables](/system-variables.md#tidb_max_auto_analyze_time-new-in-v610)
+- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md)
+
+### tidb_max_bytes_before_tiflash_external_group_by
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_max_bytes_before_tiflash_external_group_by-new-in-v700)
+- [TiFlash Spill to Disk](/tiflash/tiflash-spill-disk.md)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+
+### tidb_max_bytes_before_tiflash_external_join
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_max_bytes_before_tiflash_external_join-new-in-v700)
+- [TiFlash Spill to Disk](/tiflash/tiflash-spill-disk.md)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+
+### tidb_max_bytes_before_tiflash_external_sort
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_max_bytes_before_tiflash_external_sort-new-in-v700)
+- [TiFlash Spill to Disk](/tiflash/tiflash-spill-disk.md)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+
+### tidb_max_chunk_size
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_max_chunk_size)
+- [TiDB Transaction Isolation Levels](/transaction-isolation-levels.md)
+- [tidb-performance-tuning-config](/tidb-performance-tuning-config.md)
+- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md)
+- [TiDB 7.5.1 Release Notes](/releases/release-7.5.1.md)
+- [TiDB 7.1.3 Release Notes](/releases/release-7.1.3.md)
+- [TiDB 6.5.7 Release Notes](/releases/release-6.5.7.md)
+- [TiDB 2.0.9 Release Notes](/releases/release-2.0.9.md)
+
+### tidb_max_delta_schema_count
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [SQL FAQs](/faq/sql-faq.md)
+- [System Variables](/system-variables.md#tidb_max_delta_schema_count-new-in-v2118-and-v305)
+- [TiDB 3.0.5 Release Notes](/releases/release-3.0.5.md)
+- [TiDB 2.1.18 Release Notes](/releases/release-2.1.18.md)
+
+### tidb_max_paging_size
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_max_paging_size-new-in-v630)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+
+### tidb_max_tiflash_threads
+
+Referenced in:
+
+- [Configure TiFlash](/tiflash/tiflash-configuration.md)
+- [Modify Configuration Dynamically](/dynamic-config.md)
+- [System Variables](/system-variables.md#tidb_max_tiflash_threads-new-in-v610)
+- [TiDB Cloud Release Notes in 2022](https://docs.pingcap.com/tidbcloud/release-notes-2022)
+- [Tune TiFlash Performance](/tiflash/tune-tiflash-performance.md)
+- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md)
+
+### tidb_mem_oom_action
+
+Referenced in:
+
+- [Non-Transactional DML Statements](/non-transactional-dml.md)
+- [System Variables](/system-variables.md#tidb_mem_oom_action-new-in-v610)
+- [TiDB Cloud Release Notes in 2022](https://docs.pingcap.com/tidbcloud/release-notes-2022)
+- [TiDB Memory Control](/configure-memory-usage.md)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md)
+
+### tidb_mem_quota_analyze
+
+Referenced in:
+
+- [Introduction to Statistics](/statistics.md)
+- [System Variables](/system-variables.md#tidb_mem_quota_analyze-new-in-v610)
+- [Troubleshoot TiDB OOM Issues](/troubleshoot-tidb-oom.md)
+- [TiDB 8.1.0 Release Notes](/releases/release-8.1.0.md)
+- [TiDB 7.5.2 Release Notes](/releases/release-7.5.2.md)
+- [TiDB 7.1.6 Release Notes](/releases/release-7.1.6.md)
+- [TiDB 6.5.10 Release Notes](/releases/release-6.5.10.md)
+- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md)
+
+### tidb_mem_quota_apply_cache
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_mem_quota_apply_cache-new-in-v50)
+
+### tidb_mem_quota_binding_cache
+
+Referenced in:
+
+- [SQL Plan Management (SPM)](/sql-plan-management.md)
+- [System Variables](/system-variables.md#tidb_mem_quota_binding_cache-new-in-v600)
+- [TiDB 6.0.0 Release Notes](/releases/release-6.0.0-dmr.md)
+
+### tidb_mem_quota_query
+
+Referenced in:
+
+- [Enable Encryption for Disk Spill](/enable-disk-spill-encrypt.md)
+- [Error Codes and Troubleshooting](/error-codes.md)
+- [Explain Statements That Use Joins](/explain-joins.md)
+- [Identify Expensive Queries](/identify-expensive-queries.md)
+- [Non-Transactional DML Statements](/non-transactional-dml.md)
+- [Optimizer Hints](/optimizer-hints.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_mem_quota_query)
+- [TiDB Cloud Release Notes in 2022](https://docs.pingcap.com/tidbcloud/release-notes-2022)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB Memory Control](/configure-memory-usage.md)
+- [TiDB Troubleshooting Map](/tidb-troubleshooting-map.md)
+- [TiFlash Query Result Materialization](/tiflash/tiflash-results-materialization.md)
+- [Troubleshoot TiDB OOM Issues](/troubleshoot-tidb-oom.md)
+- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md)
+- [TiDB 8.1.2 Release Notes](/releases/release-8.1.2.md)
+- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md)
+- [TiDB 7.5.4 Release Notes](/releases/release-7.5.4.md)
+- [TiDB 7.5.1 Release Notes](/releases/release-7.5.1.md)
+- [TiDB 7.3.0 Release Notes](/releases/release-7.3.0.md)
+- [TiDB 7.2.0 Release Notes](/releases/release-7.2.0.md)
+- [TiDB 7.1.6 Release Notes](/releases/release-7.1.6.md)
+- [TiDB 7.1.4 Release Notes](/releases/release-7.1.4.md)
+- [TiDB 7.1.1 Release Notes](/releases/release-7.1.1.md)
+- [TiDB 6.5.11 Release Notes](/releases/release-6.5.11.md)
+- [TiDB 6.5.7 Release Notes](/releases/release-6.5.7.md)
+- [TiDB 6.5.4 Release Notes](/releases/release-6.5.4.md)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md)
+- [TiDB 6.0.0 Release Notes](/releases/release-6.0.0-dmr.md)
+- [TiDB 4.0.10 Release Notes](/releases/release-4.0.10.md)
+
+### tidb_memory_debug_mode_alarm_ratio
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_memory_debug_mode_alarm_ratio)
+
+### tidb_memory_debug_mode_min_heap_inuse
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_memory_debug_mode_min_heap_inuse)
+
+### tidb_memory_usage_alarm_keep_record_num
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_memory_usage_alarm_keep_record_num-new-in-v640)
+- [TiDB Memory Control](/configure-memory-usage.md)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+
+### tidb_memory_usage_alarm_ratio
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_memory_usage_alarm_ratio)
+- [TiDB Memory Control](/configure-memory-usage.md)
+- [Troubleshoot TiDB OOM Issues](/troubleshoot-tidb-oom.md)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+
+### tidb_merge_join_concurrency
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_merge_join_concurrency)
+
+### tidb_merge_partition_stats_concurrency
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_merge_partition_stats_concurrency)
+- [TiDB 7.5.0 Release Notes](/releases/release-7.5.0.md)
+- [TiDB 7.1.4 Release Notes](/releases/release-7.1.4.md)
+- [TiDB 6.5.9 Release Notes](/releases/release-6.5.9.md)
+
+### tidb_metric_query_range_duration
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [Metrics Schema](/metrics-schema.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_metric_query_range_duration-new-in-v40)
+
+### tidb_metric_query_step
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [Metrics Schema](/metrics-schema.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_metric_query_step-new-in-v40)
+
+### tidb_min_paging_size
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_min_paging_size-new-in-v620)
+- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md)
+
+### tidb_mpp_store_fail_ttl
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_mpp_store_fail_ttl)
+
+### tidb_multi_statement_mode
+
+Referenced in:
+
+- [Error Codes and Troubleshooting](/error-codes.md)
+- [Integrate TiDB Cloud with n8n](https://docs.pingcap.com/tidbcloud/integrate-tidbcloud-with-n8n)
+- [System Variables](/system-variables.md#tidb_multi_statement_mode-new-in-v4011)
+- [TiDB 7.5.1 Release Notes](/releases/release-7.5.1.md)
+- [TiDB 7.1.4 Release Notes](/releases/release-7.1.4.md)
+- [TiDB 6.5.8 Release Notes](/releases/release-6.5.8.md)
+- [TiDB 5.2 Release Notes](/releases/release-5.2.0.md)
+- [TiDB 5.1.1 Release Notes](/releases/release-5.1.1.md)
+- [TiDB 5.0.3 Release Notes](/releases/release-5.0.3.md)
+- [TiDB 4.0.14 Release Notes](/releases/release-4.0.14.md)
+
+### tidb_non_prepared_plan_cache_size
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_non_prepared_plan_cache_size)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+
+### tidb_nontransactional_ignore_error
+
+Referenced in:
+
+- [Non-Transactional DML Statements](/non-transactional-dml.md)
+- [System Variables](/system-variables.md#tidb_nontransactional_ignore_error-new-in-v610)
+- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md)
+
+### tidb_opt_advanced_join_hint
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_opt_advanced_join_hint-new-in-v700)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+
+### tidb_opt_agg_push_down
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_opt_agg_push_down)
+- [Tune TiFlash Performance](/tiflash/tune-tiflash-performance.md)
+- [tidb-performance-tuning-config](/tidb-performance-tuning-config.md)
+- [TiDB 7.3.0 Release Notes](/releases/release-7.3.0.md)
+- [TiDB 7.1.1 Release Notes](/releases/release-7.1.1.md)
+- [TiDB 6.5.4 Release Notes](/releases/release-6.5.4.md)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+- [TiDB 6.1.7 Release Notes](/releases/release-6.1.7.md)
+- [TiDB 5.4.2 Release Notes](/releases/release-5.4.2.md)
+- [TiDB 5.1.5 Release Notes](/releases/release-5.1.5.md)
+- [TiDB 4.0 GA Release Notes](/releases/release-4.0-ga.md)
+
+### tidb_opt_broadcast_cartesian_join
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_opt_broadcast_cartesian_join)
+
+### tidb_opt_concurrency_factor
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_opt_concurrency_factor)
+
+### tidb_opt_copcpu_factor
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_opt_copcpu_factor)
+
+### tidb_opt_correlation_exp_factor
+
+Referenced in:
+
+- [Introduction to Extended Statistics](/extended-statistics.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_opt_correlation_exp_factor)
+- [TiDB 3.0.0-rc.1 Release Notes](/releases/release-3.0.0-rc.1.md)
+
+### tidb_opt_correlation_threshold
+
+Referenced in:
+
+- [Introduction to Extended Statistics](/extended-statistics.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_opt_correlation_threshold)
+
+### tidb_opt_cpu_factor
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_opt_cpu_factor)
+
+### tidb_opt_derive_topn
+
+Referenced in:
+
+- [Derive TopN or Limit from Window Functions](/derive-topn-from-window.md)
+- [System Variables](/system-variables.md#tidb_opt_derive_topn-new-in-v700)
+- [tidb-performance-tuning-config](/tidb-performance-tuning-config.md)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+
+### tidb_opt_desc_factor
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_opt_desc_factor)
+
+### tidb_opt_disk_factor
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_opt_disk_factor)
+
+### tidb_opt_distinct_agg_push_down
+
+Referenced in:
+
+- [Distinct Optimization](/agg-distinct-optimization.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_opt_distinct_agg_push_down)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [Tune TiFlash Performance](/tiflash/tune-tiflash-performance.md)
+- [tidb-performance-tuning-config](/tidb-performance-tuning-config.md)
+
+### tidb_opt_enable_correlation_adjustment
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_opt_enable_correlation_adjustment)
+- [TiDB 5.2 Release Notes](/releases/release-5.2.0.md)
+
+### tidb_opt_enable_fuzzy_binding
+
+Referenced in:
+
+- [SQL Plan Management (SPM)](/sql-plan-management.md)
+- [System Variables](/system-variables.md#tidb_opt_enable_fuzzy_binding-new-in-v760)
+- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md)
+
+### tidb_opt_enable_hash_join
+
+Referenced in:
+
+- [Optimizer Hints](/optimizer-hints.md)
+- [System Variables](/system-variables.md#tidb_opt_enable_hash_join-new-in-v656-v712-and-v740)
+- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md)
+- [TiDB 7.1.2 Release Notes](/releases/release-7.1.2.md)
+- [TiDB 6.5.6 Release Notes](/releases/release-6.5.6.md)
+
+### tidb_opt_enable_late_materialization
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_opt_enable_late_materialization-new-in-v700)
+- [TiFlash Late Materialization](/tiflash/tiflash-late-materialization.md)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+
+### tidb_opt_enable_mpp_shared_cte_execution
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_opt_enable_mpp_shared_cte_execution-new-in-v720)
+- [tidb-performance-tuning-config](/tidb-performance-tuning-config.md)
+- [TiDB 7.3.0 Release Notes](/releases/release-7.3.0.md)
+
+### tidb_opt_enable_non_eval_scalar_subquery
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_opt_enable_non_eval_scalar_subquery-new-in-v730)
+- [`EXPLAIN`](/sql-statements/sql-statement-explain.md)
+- [`EXPLAIN` Walkthrough](/explain-walkthrough.md)
+- [TiDB 7.3.0 Release Notes](/releases/release-7.3.0.md)
+
+### tidb_opt_fix_control
+
+Referenced in:
+
+- [Control Execution Plan](/control-execution-plan.md)
+- [Optimizer Fix Controls](/optimizer-fix-controls.md)
+- [SQL Non-Prepared Execution Plan Cache](/sql-non-prepared-plan-cache.md)
+- [System Variables](/system-variables.md#tidb_opt_fix_control-new-in-v653-and-v710)
+- [tidb-performance-tuning-config](/tidb-performance-tuning-config.md)
+- [TiDB 7.2.0 Release Notes](/releases/release-7.2.0.md)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### tidb_opt_force_inline_cte
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_opt_force_inline_cte-new-in-v630)
+- [TiDB 7.3.0 Release Notes](/releases/release-7.3.0.md)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+
+### tidb_opt_insubq_to_join_and_agg
+
+Referenced in:
+
+- [Optimizer Hints](/optimizer-hints.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [Subquery Related Optimizations](/subquery-optimization.md)
+- [System Variables](/system-variables.md#tidb_opt_insubq_to_join_and_agg)
+- [TiDB 3.0 Beta Release Notes](/releases/release-3.0-beta.md)
+
+### tidb_opt_join_reorder_threshold
+
+Referenced in:
+
+- [Introduction to Join Reorder](/join-reorder.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_opt_join_reorder_threshold)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+- [TiDB 3.0.0-rc.1 Release Notes](/releases/release-3.0.0-rc.1.md)
+
+### tidb_opt_limit_push_down_threshold
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_opt_limit_push_down_threshold)
+- [TiDB 5.2 Release Notes](/releases/release-5.2.0.md)
+
+### tidb_opt_memory_factor
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_opt_memory_factor)
+
+### tidb_opt_mpp_outer_join_fixed_build_side
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_opt_mpp_outer_join_fixed_build_side-new-in-v510)
+
+### tidb_opt_network_factor
+
+Referenced in:
+
+- [Index Selection](/choose-index.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_opt_network_factor)
+
+### tidb_opt_objective
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_opt_objective-new-in-v740)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+- [TiDB 7.5.2 Release Notes](/releases/release-7.5.2.md)
+- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md)
+
+### tidb_opt_ordering_index_selectivity_ratio
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_opt_ordering_index_selectivity_ratio-new-in-v800)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+
+### tidb_opt_ordering_index_selectivity_threshold
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_opt_ordering_index_selectivity_threshold-new-in-v700)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+
+### tidb_opt_prefer_range_scan
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_opt_prefer_range_scan-new-in-v50)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+
+### tidb_opt_prefix_index_single_scan
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_opt_prefix_index_single_scan-new-in-v640)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+
+### tidb_opt_projection_push_down
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_opt_projection_push_down-new-in-v610)
+- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md)
+
+### tidb_opt_range_max_size
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_opt_range_max_size-new-in-v640)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+
+### tidb_opt_scan_factor
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_opt_scan_factor)
+
+### tidb_opt_seek_factor
+
+Referenced in:
+
+- [Index Selection](/choose-index.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_opt_seek_factor)
+
+### tidb_opt_skew_distinct_agg
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_opt_skew_distinct_agg-new-in-v620)
+- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md)
+
+### tidb_opt_three_stage_distinct_agg
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_opt_three_stage_distinct_agg-new-in-v630)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+
+### tidb_opt_tiflash_concurrency_factor
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_opt_tiflash_concurrency_factor)
+
+### tidb_opt_use_invisible_indexes
+
+Referenced in:
+
+- [ALTER INDEX](/sql-statements/sql-statement-alter-index.md)
+- [CREATE INDEX](/sql-statements/sql-statement-create-index.md)
+- [System Variables](/system-variables.md#tidb_opt_use_invisible_indexes-new-in-v800)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+
+### tidb_opt_write_row_id
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_opt_write_row_id)
+- [TiDB 2.1 RC5 Release Notes](/releases/release-2.1-rc.5.md)
+
+### tidb_optimizer_selectivity_level
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_optimizer_selectivity_level)
+
+### tidb_partition_prune_mode
+
+Referenced in:
+
+- [Partitioning](/partitioned-table.md)
+- [SQL Prepared Execution Plan Cache](/sql-prepared-plan-cache.md)
+- [System Variables](/system-variables.md#tidb_partition_prune_mode-new-in-v51)
+- [TiFlash Upgrade Guide](/tiflash-upgrade-guide.md)
+- [Use TiFlash MPP Mode](/tiflash/use-tiflash-mpp-mode.md)
+- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md)
+- [TiDB 8.1.0 Release Notes](/releases/release-8.1.0.md)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+- [TiDB 5.1 Release Notes](/releases/release-5.1.0.md)
+
+### tidb_persist_analyze_options
+
+Referenced in:
+
+- [Introduction to Statistics](/statistics.md)
+- [System Variables](/system-variables.md#tidb_persist_analyze_options-new-in-v540)
+- [TiDB 8.2.0 Release Notes](/releases/release-8.2.0.md)
+- [TiDB 5.4 Release Notes](/releases/release-5.4.0.md)
+
+### tidb_pessimistic_txn_fair_locking
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_pessimistic_txn_fair_locking-new-in-v700)
+- [Troubleshoot Lock Conflicts](/troubleshoot-lock-conflicts.md)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+
+### tidb_placement_mode
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_placement_mode-new-in-v600)
+- [TiDB 6.0.0 Release Notes](/releases/release-6.0.0-dmr.md)
+
+### tidb_plan_cache_invalidation_on_fresh_stats
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_plan_cache_invalidation_on_fresh_stats-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### tidb_plan_cache_max_plan_size
+
+Referenced in:
+
+- [SQL Non-Prepared Execution Plan Cache](/sql-non-prepared-plan-cache.md)
+- [SQL Prepared Execution Plan Cache](/sql-prepared-plan-cache.md)
+- [System Variables](/system-variables.md#tidb_plan_cache_max_plan_size-new-in-v710)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### tidb_pprof_sql_cpu
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_pprof_sql_cpu-new-in-v40)
+- [TiDB 3.0.10 Release Notes](/releases/release-3.0.10.md)
+
+### tidb_pre_split_regions
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_pre_split_regions-new-in-v840)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+
+### tidb_prefer_broadcast_join_by_exchange_data_size
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_prefer_broadcast_join_by_exchange_data_size-new-in-v710)
+- [Use TiFlash MPP Mode](/tiflash/use-tiflash-mpp-mode.md)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### tidb_prepared_plan_cache_memory_guard_ratio
+
+Referenced in:
+
+- [SQL Prepared Execution Plan Cache](/sql-prepared-plan-cache.md)
+- [System Variables](/system-variables.md#tidb_prepared_plan_cache_memory_guard_ratio-new-in-v610)
+- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md)
+
+### tidb_prepared_plan_cache_size
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_prepared_plan_cache_size-new-in-v610)
+- [TiDB Cloud Release Notes in 2022](https://docs.pingcap.com/tidbcloud/release-notes-2022)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md)
+
+### tidb_projection_concurrency
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_projection_concurrency)
+- [TiDB 5.0 Release Notes](/releases/release-5.0.0.md)
+
+### tidb_query_log_max_len
+
+Referenced in:
+
+- [Identify Slow Queries](/identify-slow-queries.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_query_log_max_len)
+- [TiDB Cloud Release Notes in 2022](https://docs.pingcap.com/tidbcloud/release-notes-2022)
+- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md)
+- [TiDB 2.1 GA Release Notes](/releases/release-2.1-ga.md)
+- [TiDB 2.1 RC5 Release Notes](/releases/release-2.1-rc.5.md)
+
+### tidb_rc_read_check_ts
+
+Referenced in:
+
+- [Performance Tuning Practices for OLTP Scenarios](/performance-tuning-practices.md)
+- [System Variables](/system-variables.md#tidb_rc_read_check_ts-new-in-v600)
+- [TiDB Transaction Isolation Levels](/transaction-isolation-levels.md)
+- [tidb-performance-tuning-config](/tidb-performance-tuning-config.md)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+- [TiDB 6.0.0 Release Notes](/releases/release-6.0.0-dmr.md)
+
+### tidb_rc_write_check_ts
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_rc_write_check_ts-new-in-v630)
+- [TiDB Transaction Isolation Levels](/transaction-isolation-levels.md)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+
+### tidb_read_consistency
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_read_consistency-new-in-v540)
+
+### tidb_read_staleness
+
+Referenced in:
+
+- [Read Historical Data Using the `tidb_read_staleness` System Variable](/tidb-read-staleness.md)
+- [Stale Read](/develop/dev-guide-use-stale-read.md)
+- [System Variables](/system-variables.md#tidb_read_staleness-new-in-v540)
+- [Usage Scenarios of Stale Read](/stale-read.md)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+- [TiDB 5.4 Release Notes](/releases/release-5.4.0.md)
+
+### tidb_record_plan_in_slow_log
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [Modify Configuration Dynamically](/dynamic-config.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_record_plan_in_slow_log)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB 3.0.5 Release Notes](/releases/release-3.0.5.md)
+
+### tidb_redact_log
+
+Referenced in:
+
+- [Configuration Options](/command-line-flags-for-tidb-configuration.md)
+- [Identify Slow Queries](/identify-slow-queries.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [Log Redaction](/log-redaction.md)
+- [Non-Transactional DML Statements](/non-transactional-dml.md)
+- [System Variables](/system-variables.md#tidb_redact_log)
+- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md)
+- [TiDB 8.1.1 Release Notes](/releases/release-8.1.1.md)
+- [TiDB 8.1.0 Release Notes](/releases/release-8.1.0.md)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+- [TiDB 7.5.4 Release Notes](/releases/release-7.5.4.md)
+- [TiDB 5.0 Release Notes](/releases/release-5.0.0.md)
+- [TiDB 5.0 RC Release Notes](/releases/release-5.0.0-rc.md)
+
+### tidb_regard_null_as_point
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_regard_null_as_point-new-in-v540)
+- [TiDB 5.4 Release Notes](/releases/release-5.4.0.md)
+
+### tidb_remove_orderby_in_subquery
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_remove_orderby_in_subquery-new-in-v610)
+- [TiDB 7.2.0 Release Notes](/releases/release-7.2.0.md)
+
+### tidb_replica_read
+
+Referenced in:
+
+- [Best Practices for Read-Only Storage Nodes](/best-practices/readonly-nodes.md)
+- [Follower Read](/follower-read.md)
+- [Follower Read](/develop/dev-guide-use-follower-read.md)
+- [Local Read under Three Data Centers Deployment](/best-practices/three-dc-local-read.md)
+- [Optimizer Hints](/optimizer-hints.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_replica_read-new-in-v40)
+- [TiDB Best Practices on Public Cloud](/best-practices-on-public-cloud.md)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+- [TiDB 5.4 Release Notes](/releases/release-5.4.0.md)
+- [TiDB 4.0.2 Release Notes](/releases/release-4.0.2.md)
+- [TiDB 3.1 Beta.2 Release Notes](/releases/release-3.1.0-beta.2.md)
+
+### tidb_request_source_type
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_request_source_type-new-in-v740)
+- [Use Resource Control to Achieve Resource Isolation](/tidb-resource-control.md)
+- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md)
+
+### tidb_resource_control_strict_mode
+
+Referenced in:
+
+- [Optimizer Hints](/optimizer-hints.md)
+- [Privilege Management](/privilege-management.md)
+- [SET RESOURCE GROUP](/sql-statements/sql-statement-set-resource-group.md)
+- [System Variables](/system-variables.md#tidb_resource_control_strict_mode-new-in-v820)
+- [Use Resource Control to Achieve Resource Isolation](/tidb-resource-control.md)
+- [TiDB 8.2.0 Release Notes](/releases/release-8.2.0.md)
+
+### tidb_restricted_read_only
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [Privilege Management](/privilege-management.md)
+- [Replicate Data to MySQL-compatible Databases](/ticdc/ticdc-sink-to-mysql.md)
+- [System Variables](/system-variables.md#tidb_restricted_read_only-new-in-v520)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+- [TiDB 5.4.1 Release Notes](/releases/release-5.4.1.md)
+- [TiDB 5.3.1 Release Notes](/releases/release-5.3.1.md)
+
+### tidb_retry_limit
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_retry_limit)
+- [TiDB Optimistic Transaction Model](/optimistic-transaction.md)
+- [TiDB Pessimistic Transaction Mode](/pessimistic-transaction.md)
+- [Transactions](/transaction-overview.md)
+- [Troubleshoot Lock Conflicts](/troubleshoot-lock-conflicts.md)
+- [TiDB 2.1 Beta Release Notes](/releases/release-2.1-beta.md)
+- [TiDB 2.1 GA Release Notes](/releases/release-2.1-ga.md)
+
+### tidb_row_format_version
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_row_format_version)
+- [TiDB 4.0.13 Release Notes](/releases/release-4.0.13.md)
+
+### tidb_runtime_filter_mode
+
+Referenced in:
+
+- [Runtime Filter](/runtime-filter.md)
+- [System Variables](/system-variables.md#tidb_runtime_filter_mode-new-in-v720)
+- [tidb-performance-tuning-config](/tidb-performance-tuning-config.md)
+- [TiDB 7.3.0 Release Notes](/releases/release-7.3.0.md)
+
+### tidb_runtime_filter_type
+
+Referenced in:
+
+- [Runtime Filter](/runtime-filter.md)
+- [System Variables](/system-variables.md#tidb_runtime_filter_type-new-in-v720)
+
+### tidb_scatter_region
+
+Referenced in:
+
+- [Highly Concurrent Write Best Practices](/best-practices/high-concurrency-best-practices.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [Split Region](/sql-statements/sql-statement-split-region.md)
+- [System Variables](/system-variables.md#tidb_scatter_region)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+- [TiDB 6.1.7 Release Notes](/releases/release-6.1.7.md)
+- [TiDB 2.1.15 Release Notes](/releases/release-2.1.15.md)
+
+### tidb_schema_cache_size
+
+Referenced in:
+
+- [Schema Cache](/schema-cache.md)
+- [System Variables](/system-variables.md#tidb_schema_cache_size-new-in-v800)
+- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+
+### tidb_schema_version_cache_limit
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_schema_version_cache_limit-new-in-v740)
+- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md)
+
+### tidb_server_memory_limit
+
+Referenced in:
+
+- [IMPORT INTO](/sql-statements/sql-statement-import-into.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [MEMORY_USAGE](/information-schema/information-schema-memory-usage.md)
+- [MEMORY_USAGE_OPS_HISTORY](/information-schema/information-schema-memory-usage-ops-history.md)
+- [System Variables](/system-variables.md#tidb_server_memory_limit-new-in-v640)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB Memory Control](/configure-memory-usage.md)
+- [Troubleshoot TiDB OOM Issues](/troubleshoot-tidb-oom.md)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md)
+- [TiDB 7.5.1 Release Notes](/releases/release-7.5.1.md)
+- [TiDB 7.1.4 Release Notes](/releases/release-7.1.4.md)
+- [TiDB 7.1.3 Release Notes](/releases/release-7.1.3.md)
+- [TiDB 6.5.9 Release Notes](/releases/release-6.5.9.md)
+- [TiDB 6.5.7 Release Notes](/releases/release-6.5.7.md)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+
+### tidb_server_memory_limit_gc_trigger
+
+Referenced in:
+
+- [IMPORT INTO](/sql-statements/sql-statement-import-into.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_server_memory_limit_gc_trigger-new-in-v640)
+- [TiDB Memory Control](/configure-memory-usage.md)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+
+### tidb_server_memory_limit_sess_min_size
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_server_memory_limit_sess_min_size-new-in-v640)
+- [TiDB 6.5.2 Release Notes](/releases/release-6.5.2.md)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+
+### tidb_service_scope
+
+Referenced in:
+
+- [ADMIN SHOW DDL [JOBS|JOB QUERIES]](/sql-statements/sql-statement-admin-show-ddl.md)
+- [Configuration Options](/command-line-flags-for-tidb-configuration.md)
+- [IMPORT INTO vs. TiDB Lightning](/tidb-lightning/import-into-vs-tidb-lightning.md)
+- [System Variables](/system-variables.md#tidb_service_scope-new-in-v740)
+- [TiDB Distributed eXecution Framework (DXF)](/tidb-distributed-execution-framework.md)
+- [TiDB Features](/basic-features.md)
+- [TiDB Global Sort](/tidb-global-sort.md)
+- [TiDB 8.1.0 Release Notes](/releases/release-8.1.0.md)
+- [TiDB 7.5.1 Release Notes](/releases/release-7.5.1.md)
+- [TiDB 7.5.0 Release Notes](/releases/release-7.5.0.md)
+- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md)
+
+### tidb_session_alias
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_session_alias-new-in-v740)
+- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md)
+
+### tidb_session_plan_cache_size
+
+Referenced in:
+
+- [SQL Non-Prepared Execution Plan Cache](/sql-non-prepared-plan-cache.md)
+- [SQL Prepared Execution Plan Cache](/sql-prepared-plan-cache.md)
+- [System Variables](/system-variables.md#tidb_session_plan_cache_size-new-in-v710)
+- [TiDB Cloud Sysbench Performance Test Report for TiDB v8.1.0](https://docs.pingcap.com/tidbcloud/v8.1-performance-benchmarking-with-sysbench)
+- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+
+### tidb_shard_allocate_step
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_shard_allocate_step-new-in-v50)
+
+### tidb_shard_row_id_bits
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_shard_row_id_bits-new-in-v840)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+
+### tidb_simplified_metrics
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_simplified_metrics)
+
+### tidb_skip_ascii_check
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_skip_ascii_check-new-in-v50)
+- [TiDB 5.0 Release Notes](/releases/release-5.0.0.md)
+
+### tidb_skip_isolation_level_check
+
+Referenced in:
+
+- [Error Codes and Troubleshooting](/error-codes.md)
+- [Known Incompatibility Issues with Third-Party Tools](/develop/dev-guide-third-party-tools-compatibility.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_skip_isolation_level_check)
+- [Transaction overview](/develop/dev-guide-transaction-overview.md)
+- [TiDB 5.1.4 Release Notes](/releases/release-5.1.4.md)
+- [TiDB 3.0.0-rc.1 Release Notes](/releases/release-3.0.0-rc.1.md)
+- [TiDB 3.0 GA Release Notes](/releases/release-3.0-ga.md)
+
+### tidb_skip_missing_partition_stats
+
+Referenced in:
+
+- [Introduction to Statistics](/statistics.md)
+- [System Variables](/system-variables.md#tidb_skip_missing_partition_stats-new-in-v730)
+- [TiDB 7.3.0 Release Notes](/releases/release-7.3.0.md)
+
+### tidb_skip_utf8_check
+
+Referenced in:
+
+- [Character Set and Collation](/character-set-and-collation.md)
+- [DM Advanced Task Configuration File](/dm/task-configuration-file-full.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_skip_utf8_check)
+- [TiDB Troubleshooting Map](/tidb-troubleshooting-map.md)
+- [Upgrade and After Upgrade FAQs](/faq/upgrade-faq.md)
+
+### tidb_slow_log_threshold
+
+Referenced in:
+
+- [Identify Slow Queries](/identify-slow-queries.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [Modify Configuration Dynamically](/dynamic-config.md)
+- [Overview Page](/dashboard/dashboard-overview.md)
+- [Quick Start with TiDB Self-Managed](/quick-start-with-tidb.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [Slow Queries Page of TiDB Dashboard](/dashboard/dashboard-slow-query.md)
+- [System Variables](/system-variables.md#tidb_slow_log_threshold)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB Deployment FAQs](/faq/deploy-and-maintain-faq.md)
+- [TiDB 2.1 GA Release Notes](/releases/release-2.1-ga.md)
+- [TiDB 2.1 RC5 Release Notes](/releases/release-2.1-rc.5.md)
+
+### tidb_slow_query_file
+
+Referenced in:
+
+- [Identify Slow Queries](/identify-slow-queries.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_slow_query_file)
+
+### tidb_snapshot
+
+Referenced in:
+
+- [Cached Tables](/cached-tables.md)
+- [FLASHBACK CLUSTER](/sql-statements/sql-statement-flashback-cluster.md)
+- [FLUSH TABLES](/sql-statements/sql-statement-flush-tables.md)
+- [IMPORT INTO](/sql-statements/sql-statement-import-into.md)
+- [Non-Transactional DML Statements](/non-transactional-dml.md)
+- [Read Historical Data Using the System Variable `tidb_snapshot`](/read-historical-data.md)
+- [Replicate Data to Kafka](/ticdc/ticdc-sink-to-kafka.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_snapshot)
+- [Temporary Tables](/temporary-tables.md)
+- [TiDB Features](/basic-features.md)
+- [Use Dumpling to Export Data](/dumpling-overview.md)
+- [TiDB 5.3 Release Notes](/releases/release-5.3.0.md)
+- [TiDB 5.2.2 Release Notes](/releases/release-5.2.2.md)
+- [TiDB 5.2 Release Notes](/releases/release-5.2.0.md)
+- [TiDB 5.1.5 Release Notes](/releases/release-5.1.5.md)
+- [TiDB 5.0.3 Release Notes](/releases/release-5.0.3.md)
+- [TiDB 4.0.12 Release Notes](/releases/release-4.0.12.md)
+- [TiDB 4.0.11 Release Notes](/releases/release-4.0.11.md)
+- [TiDB 4.0.5 Release Notes](/releases/release-4.0.5.md)
+- [TiDB 3.0.11 Release Notes](/releases/release-3.0.11.md)
+- [TiDB 2.1.11 Release Notes](/releases/release-2.1.11.md)
+- [TiDB 2.1.10 Release Notes](/releases/release-2.1.10.md)
+- [TiDB 2.0.4 Release Notes](/releases/release-2.0.4.md)
+
+### tidb_source_id
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_source_id-new-in-v650)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### tidb_stats_cache_mem_quota
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_stats_cache_mem_quota-new-in-v610)
+- [Troubleshoot TiDB OOM Issues](/troubleshoot-tidb-oom.md)
+- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md)
+- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md)
+
+### tidb_stats_load_pseudo_timeout
+
+Referenced in:
+
+- [Introduction to Statistics](/statistics.md)
+- [System Variables](/system-variables.md#tidb_stats_load_pseudo_timeout-new-in-v540)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+- [TiDB 5.4 Release Notes](/releases/release-5.4.0.md)
+
+### tidb_stats_load_sync_wait
+
+Referenced in:
+
+- [Introduction to Statistics](/statistics.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_stats_load_sync_wait-new-in-v540)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md)
+- [TiDB 5.4 Release Notes](/releases/release-5.4.0.md)
+
+### tidb_stmt_summary_enable_persistent
+
+Referenced in:
+
+- [Statement Summary Tables](/statement-summary-tables.md)
+- [System Variables](/system-variables.md#tidb_stmt_summary_enable_persistent-new-in-v660)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+
+### tidb_stmt_summary_file_max_backups
+
+Referenced in:
+
+- [Statement Summary Tables](/statement-summary-tables.md)
+- [System Variables](/system-variables.md#tidb_stmt_summary_file_max_backups-new-in-v660)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+
+### tidb_stmt_summary_file_max_days
+
+Referenced in:
+
+- [Statement Summary Tables](/statement-summary-tables.md)
+- [System Variables](/system-variables.md#tidb_stmt_summary_file_max_days-new-in-v660)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+
+### tidb_stmt_summary_file_max_size
+
+Referenced in:
+
+- [Statement Summary Tables](/statement-summary-tables.md)
+- [System Variables](/system-variables.md#tidb_stmt_summary_file_max_size-new-in-v660)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+
+### tidb_stmt_summary_filename
+
+Referenced in:
+
+- [Statement Summary Tables](/statement-summary-tables.md)
+- [System Variables](/system-variables.md#tidb_stmt_summary_filename-new-in-v660)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+
+### tidb_stmt_summary_history_size
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [Statement Summary Tables](/statement-summary-tables.md)
+- [System Variables](/system-variables.md#tidb_stmt_summary_history_size-new-in-v40)
+
+### tidb_stmt_summary_internal_query
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [Statement Summary Tables](/statement-summary-tables.md)
+- [System Variables](/system-variables.md#tidb_stmt_summary_internal_query-new-in-v40)
+
+### tidb_stmt_summary_max_sql_length
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [SLOW_QUERY](/information-schema/information-schema-slow-query.md)
+- [Slow Queries Page of TiDB Dashboard](/dashboard/dashboard-slow-query.md)
+- [Statement Summary Tables](/statement-summary-tables.md)
+- [System Variables](/system-variables.md#tidb_stmt_summary_max_sql_length-new-in-v40)
+
+### tidb_stmt_summary_max_stmt_count
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [SQL Statements Page of TiDB Dashboard](/dashboard/dashboard-statement-list.md)
+- [Statement Summary Tables](/statement-summary-tables.md)
+- [System Variables](/system-variables.md#tidb_stmt_summary_max_stmt_count-new-in-v40)
+- [TiDB 5.2 Release Notes](/releases/release-5.2.0.md)
+- [TiDB 5.1.1 Release Notes](/releases/release-5.1.1.md)
+- [TiDB 5.0.4 Release Notes](/releases/release-5.0.4.md)
+- [TiDB 4.0.14 Release Notes](/releases/release-4.0.14.md)
+
+### tidb_stmt_summary_refresh_interval
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [Statement Summary Tables](/statement-summary-tables.md)
+- [System Variables](/system-variables.md#tidb_stmt_summary_refresh_interval-new-in-v40)
+
+### tidb_store_batch_size
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_store_batch_size)
+- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md)
+- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md)
+
+### tidb_store_limit
+
+Referenced in:
+
+- [Error Codes and Troubleshooting](/error-codes.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_store_limit-new-in-v304-and-v40)
+- [TiDB 5.4 Release Notes](/releases/release-5.4.0.md)
+
+### tidb_streamagg_concurrency
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_streamagg_concurrency)
+
+### tidb_super_read_only
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_super_read_only-new-in-v531)
+- [TiDB 5.4.1 Release Notes](/releases/release-5.4.1.md)
+- [TiDB 5.3.1 Release Notes](/releases/release-5.3.1.md)
+
+### tidb_sysdate_is_now
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_sysdate_is_now-new-in-v600)
+- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md)
+- [TiDB 6.0.0 Release Notes](/releases/release-6.0.0-dmr.md)
+
+### tidb_sysproc_scan_concurrency
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_sysproc_scan_concurrency-new-in-v650)
+- [TiDB 8.2.0 Release Notes](/releases/release-8.2.0.md)
+- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### tidb_table_cache_lease
+
+Referenced in:
+
+- [Cached Tables](/cached-tables.md)
+- [System Variables](/system-variables.md#tidb_table_cache_lease-new-in-v600)
+- [TiDB 6.0.0 Release Notes](/releases/release-6.0.0-dmr.md)
+
+### tidb_tmp_table_max_size
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_tmp_table_max_size-new-in-v530)
+- [Temporary Tables](/temporary-tables.md)
+- [TiDB 5.3 Release Notes](/releases/release-5.3.0.md)
+
+### tidb_top_sql_max_meta_count
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_top_sql_max_meta_count-new-in-v600)
+- [TiDB 6.0.0 Release Notes](/releases/release-6.0.0-dmr.md)
+
+### tidb_top_sql_max_time_series_count
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_top_sql_max_time_series_count-new-in-v600)
+- [TiDB 6.0.0 Release Notes](/releases/release-6.0.0-dmr.md)
+
+### tidb_track_aggregate_memory_usage
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_track_aggregate_memory_usage)
+
+### tidb_tso_client_batch_max_wait_time
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_tso_client_batch_max_wait_time-new-in-v530)
+- [TiDB Best Practices on Public Cloud](/best-practices-on-public-cloud.md)
+- [TiDB 5.3 Release Notes](/releases/release-5.3.0.md)
+
+### tidb_tso_client_rpc_mode
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_tso_client_rpc_mode-new-in-v840)
+- [tidb-performance-tuning-config](/tidb-performance-tuning-config.md)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+
+### tidb_ttl_delete_batch_size
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_ttl_delete_batch_size-new-in-v650)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### tidb_ttl_delete_rate_limit
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_ttl_delete_rate_limit-new-in-v650)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### tidb_ttl_delete_worker_count
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [Periodically Delete Expired Data Using TTL (Time to Live)](/time-to-live.md)
+- [System Variables](/system-variables.md#tidb_ttl_delete_worker_count-new-in-v650)
+- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md)
+- [TiDB 8.1.2 Release Notes](/releases/release-8.1.2.md)
+- [TiDB 7.1.6 Release Notes](/releases/release-7.1.6.md)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### tidb_ttl_job_enable
+
+Referenced in:
+
+- [Periodically Delete Expired Data Using TTL (Time to Live)](/time-to-live.md)
+- [System Variables](/system-variables.md#tidb_ttl_job_enable-new-in-v650)
+- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md)
+- [TiDB 8.1.2 Release Notes](/releases/release-8.1.2.md)
+- [TiDB 7.5.5 Release Notes](/releases/release-7.5.5.md)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### tidb_ttl_job_schedule_window_end_time
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [Periodically Delete Expired Data Using TTL (Time to Live)](/time-to-live.md)
+- [System Variables](/system-variables.md#tidb_ttl_job_schedule_window_end_time-new-in-v650)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### tidb_ttl_job_schedule_window_start_time
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [Periodically Delete Expired Data Using TTL (Time to Live)](/time-to-live.md)
+- [System Variables](/system-variables.md#tidb_ttl_job_schedule_window_start_time-new-in-v650)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### tidb_ttl_running_tasks
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [Periodically Delete Expired Data Using TTL (Time to Live)](/time-to-live.md)
+- [System Variables](/system-variables.md#tidb_ttl_running_tasks-new-in-v700)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+
+### tidb_ttl_scan_batch_size
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#tidb_ttl_scan_batch_size-new-in-v650)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### tidb_ttl_scan_worker_count
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [Periodically Delete Expired Data Using TTL (Time to Live)](/time-to-live.md)
+- [System Variables](/system-variables.md#tidb_ttl_scan_worker_count-new-in-v650)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### tidb_txn_assertion_level
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_txn_assertion_level-new-in-v600)
+- [Troubleshoot Inconsistency Between Data and Indexes](/troubleshoot-data-inconsistency-errors.md)
+- [TiDB 6.0.0 Release Notes](/releases/release-6.0.0-dmr.md)
+
+### tidb_txn_commit_batch_size
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_txn_commit_batch_size-new-in-v620)
+- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md)
+
+### tidb_txn_entry_size_limit
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tidb_txn_entry_size_limit-new-in-v760)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [Transaction Restraints](/develop/dev-guide-transaction-restraints.md)
+- [Troubleshoot TiDB Lightning](/tidb-lightning/troubleshoot-tidb-lightning.md)
+- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md)
+
+### tidb_txn_mode
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [Optimistic Transactions and Pessimistic Transactions](/develop/dev-guide-optimistic-and-pessimistic-transaction.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_txn_mode)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [TiDB Pessimistic Transaction Mode](/pessimistic-transaction.md)
+- [Transactions](/transaction-overview.md)
+- [tidb-performance-tuning-config](/tidb-performance-tuning-config.md)
+- [TiDB 6.0.0 Release Notes](/releases/release-6.0.0-dmr.md)
+- [TiDB 5.0 Release Notes](/releases/release-5.0.0.md)
+- [TiDB 3.0.8 Release Notes](/releases/release-3.0.8.md)
+- [TiDB 3.0.4 Release Notes](/releases/release-3.0.4.md)
+
+### tidb_use_plan_baselines
+
+Referenced in:
+
+- [CREATE [GLOBAL|SESSION] BINDING](/sql-statements/sql-statement-create-binding.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [SQL Plan Management (SPM)](/sql-plan-management.md)
+- [System Variables](/system-variables.md#tidb_use_plan_baselines-new-in-v40)
+
+### tidb_wait_split_region_finish
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [Split Region](/sql-statements/sql-statement-split-region.md)
+- [System Variables](/system-variables.md#tidb_wait_split_region_finish)
+
+### tidb_wait_split_region_timeout
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [Split Region](/sql-statements/sql-statement-split-region.md)
+- [System Variables](/system-variables.md#tidb_wait_split_region_timeout)
+
+### tidb_window_concurrency
+
+Referenced in:
+
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [System Variables](/system-variables.md#tidb_window_concurrency-new-in-v40)
+
+### tiflash_fastscan
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tiflash_fastscan-new-in-v630)
+- [Use FastScan](/tiflash/use-fastscan.md)
+- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md)
+- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md)
+
+### tiflash_fine_grained_shuffle_batch_size
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tiflash_fine_grained_shuffle_batch_size-new-in-v620)
+- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md)
+
+### tiflash_fine_grained_shuffle_stream_count
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tiflash_fine_grained_shuffle_stream_count-new-in-v620)
+- [Tune TiFlash Performance](/tiflash/tune-tiflash-performance.md)
+- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md)
+
+### tiflash_hashagg_preaggregation_mode
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tiflash_hashagg_preaggregation_mode-new-in-v830)
+- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md)
+
+### tiflash_mem_quota_query_per_node
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tiflash_mem_quota_query_per_node-new-in-v740)
+- [TiFlash Spill to Disk](/tiflash/tiflash-spill-disk.md)
+- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md)
+
+### tiflash_query_spill_ratio
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tiflash_query_spill_ratio-new-in-v740)
+- [TiFlash Spill to Disk](/tiflash/tiflash-spill-disk.md)
+- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md)
+
+### tiflash_replica_read
+
+Referenced in:
+
+- [Create TiFlash Replicas](/tiflash/create-tiflash-replicas.md)
+- [System Variables](/system-variables.md#tiflash_replica_read-new-in-v730)
+- [TiDB Features](/basic-features.md)
+- [TiDB 7.3.0 Release Notes](/releases/release-7.3.0.md)
+
+### tikv_client_read_timeout
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tikv_client_read_timeout-new-in-v740)
+- [TiDB 7.5.1 Release Notes](/releases/release-7.5.1.md)
+- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md)
+
+### time_zone
+
+Referenced in:
+
+- [Date and Time Types](/data-type-date-and-time.md)
+- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md)
+- [SQL Prepared Execution Plan Cache](/sql-prepared-plan-cache.md)
+- [System Variables](/system-variables.md#time_zone)
+- [Time Zone Support](/configure-time-zone.md)
+- [TiDB 6.0.0 Release Notes](/releases/release-6.0.0-dmr.md)
+- [TiDB 2.1.8 Release Notes](/releases/release-2.1.8.md)
+
+### timestamp
+
+Referenced in:
+
+- [System Variables](/system-variables.md#timestamp)
+
+### transaction_isolation
+
+Referenced in:
+
+- [Known Incompatibility Issues with Third-Party Tools](/develop/dev-guide-third-party-tools-compatibility.md)
+- [SET TRANSACTION](/sql-statements/sql-statement-set-transaction.md)
+- [System Variables](/system-variables.md#transaction_isolation)
+- [TiDB 6.0.0 Release Notes](/releases/release-6.0.0-dmr.md)
+
+### tx_isolation
+
+Referenced in:
+
+- [Performance Tuning Practices for OLTP Scenarios](/performance-tuning-practices.md)
+- [System Variables](/system-variables.md#tx_isolation)
+
+### tx_isolation_one_shot
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tx_isolation_one_shot)
+
+### tx_read_ts
+
+Referenced in:
+
+- [System Variables](/system-variables.md#tx_read_ts)
+
+### txn_scope
+
+Referenced in:
+
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#txn_scope)
+- [TiDB Configuration File](/tidb-configuration-file.md)
+- [Use Resource Control to Achieve Resource Isolation](/tidb-resource-control.md)
+
+### validate_password.check_user_name
+
+Referenced in:
+
+- [Encryption and Compression Functions](/functions-and-operators/encryption-and-compression-functions.md)
+- [System Variables](/system-variables.md#validate_passwordcheck_user_name-new-in-v650)
+- [TiDB Password Management](/password-management.md)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### validate_password.dictionary
+
+Referenced in:
+
+- [Encryption and Compression Functions](/functions-and-operators/encryption-and-compression-functions.md)
+- [Security Compatibility with MySQL](/security-compatibility-with-mysql.md)
+- [System Variables](/system-variables.md#validate_passworddictionary-new-in-v650)
+- [TiDB Password Management](/password-management.md)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### validate_password.enable
+
+Referenced in:
+
+- [Encryption and Compression Functions](/functions-and-operators/encryption-and-compression-functions.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [Security Compatibility with MySQL](/security-compatibility-with-mysql.md)
+- [System Variables](/system-variables.md#validate_passwordenable-new-in-v650)
+- [TiDB Password Management](/password-management.md)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### validate_password.length
+
+Referenced in:
+
+- [Encryption and Compression Functions](/functions-and-operators/encryption-and-compression-functions.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#validate_passwordlength-new-in-v650)
+- [TiDB Password Management](/password-management.md)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### validate_password.mixed_case_count
+
+Referenced in:
+
+- [Encryption and Compression Functions](/functions-and-operators/encryption-and-compression-functions.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#validate_passwordmixed_case_count-new-in-v650)
+- [TiDB Password Management](/password-management.md)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### validate_password.number_count
+
+Referenced in:
+
+- [Encryption and Compression Functions](/functions-and-operators/encryption-and-compression-functions.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#validate_passwordnumber_count-new-in-v650)
+- [TiDB Password Management](/password-management.md)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### validate_password.policy
+
+Referenced in:
+
+- [Encryption and Compression Functions](/functions-and-operators/encryption-and-compression-functions.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#validate_passwordpolicy-new-in-v650)
+- [TiDB Password Management](/password-management.md)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### validate_password.special_char_count
+
+Referenced in:
+
+- [Encryption and Compression Functions](/functions-and-operators/encryption-and-compression-functions.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#validate_passwordspecial_char_count-new-in-v650)
+- [TiDB Password Management](/password-management.md)
+- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md)
+
+### version
+
+Referenced in:
+
+- [System Variables](/system-variables.md#version)
+
+### version_comment
+
+Referenced in:
+
+- [System Variables](/system-variables.md#version_comment)
+
+### version_compile_machine
+
+Referenced in:
+
+- [System Variables](/system-variables.md#version_compile_machine)
+
+### version_compile_os
+
+Referenced in:
+
+- [System Variables](/system-variables.md#version_compile_os)
+
+### wait_timeout
+
+Referenced in:
+
+- [Best Practices for Developing Java Applications with TiDB](/best-practices/java-app-best-practices.md)
+- [Connection Pools and Connection Parameters](/develop/dev-guide-connection-parameters.md)
+- [Limited SQL features on TiDB Cloud](https://docs.pingcap.com/tidbcloud/limited-sql-features)
+- [System Variables](/system-variables.md#wait_timeout)
+- [TiDB Cluster Management FAQs](/faq/manage-cluster-faq.md)
+- [TiProxy Overview](/tiproxy/tiproxy-overview.md)
+- [Timeouts in TiDB](/develop/dev-guide-timeouts-in-tidb.md)
+- [Troubleshoot TiDB OOM Issues](/troubleshoot-tidb-oom.md)
+- [TiDB 3.0 Beta Release Notes](/releases/release-3.0-beta.md)
+- [TiDB 3.0 GA Release Notes](/releases/release-3.0-ga.md)
+
+### warning_count
+
+Referenced in:
+
+- [System Variables](/system-variables.md#warning_count)
+- [TiDB 2.1 RC1 Release Notes](/releases/release-2.1-rc.1.md)
+
+### windowing_use_high_precision
+
+Referenced in:
+
+- [System Variables](/system-variables.md#windowing_use_high_precision)
+- [Window Functions](/functions-and-operators/window-functions.md)