From 6c467e911fbbddb4e8da01b1b36cd67dd3f772d0 Mon Sep 17 00:00:00 2001 From: Liya DU Date: Thu, 2 Jan 2025 20:00:26 -0800 Subject: [PATCH] Add sysvar reference doc --- TOC.md | 1 + system-variables-references.md | 2520 ++++++++++++++++++++++++++++++++ 2 files changed, 2521 insertions(+) create mode 100644 system-variables-references.md diff --git a/TOC.md b/TOC.md index 7fbb82843c359..f9fcbaa8fabf4 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 Variables References](/system-variables-references.md) - [Server Status Variables](/status-variables.md) - Configuration File Parameters - [tidb-server](/tidb-configuration-file.md) diff --git a/system-variables-references.md b/system-variables-references.md new file mode 100644 index 0000000000000..703917f5deab1 --- /dev/null +++ b/system-variables-references.md @@ -0,0 +1,2520 @@ +--- +title: System Variables References +summary: A list of all TiDBsystem variables and their references in the documentation. +--- + +# System Variables References + +This document lists all TiDB system variables and the files that reference them in the documentation. View the [System Variables](/system-variables.md) for more details of each variable. + +## Variables + +### allow_auto_random_explicit_insert + +Referenced in: +- [AUTO_RANDOM](/auto-random.md) +- [TiDB 4.0.3 Release Notes](/releases/release-4.0.3.md) +- [VARIABLES_INFO](/information-schema/information-schema-variables-info.md) +- [SESSION_VARIABLES](/information-schema/information-schema-session-variables.md) +- [Insert Data](/develop/dev-guide-insert-data.md) + +### authentication_ldap_sasl_auth_method_name + +Referenced in: +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### authentication_ldap_sasl_bind_base_dn + +Referenced in: +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### authentication_ldap_sasl_bind_root_dn + +Referenced in: +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### authentication_ldap_sasl_bind_root_pwd + +Referenced in: +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### authentication_ldap_sasl_ca_path + +Referenced in: +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### authentication_ldap_sasl_init_pool_size + +Referenced in: +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### authentication_ldap_sasl_max_pool_size + +Referenced in: +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### authentication_ldap_sasl_server_host + +Referenced in: +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### authentication_ldap_sasl_server_port + +Referenced in: +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### authentication_ldap_sasl_tls + +Referenced in: +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### authentication_ldap_simple_auth_method_name + +Referenced in: +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### authentication_ldap_simple_bind_base_dn + +Referenced in: +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### authentication_ldap_simple_bind_root_dn + +Referenced in: +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### authentication_ldap_simple_bind_root_pwd + +Referenced in: +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### authentication_ldap_simple_ca_path + +Referenced in: +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### authentication_ldap_simple_init_pool_size + +Referenced in: +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### authentication_ldap_simple_max_pool_size + +Referenced in: +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### authentication_ldap_simple_server_host + +Referenced in: +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### authentication_ldap_simple_server_port + +Referenced in: +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### authentication_ldap_simple_tls + +Referenced in: +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### auto_increment_increment + +Referenced in: +- [AUTO_RANDOM](/auto-random.md) +- [Auto-Increment](/auto-increment.md) +- [Error Codes](/error-codes.md) +- [Bidirectional Replication Between TiDB Clusters](/ticdc/ticdc-bidirectional-replication.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) +- [TiDB 7.1.6 Release Notes](/releases/release-7.1.6.md) + +### auto_increment_offset + +Referenced in: +- [AUTO_RANDOM](/auto-random.md) +- [Auto-Increment](/auto-increment.md) +- [Error Codes](/error-codes.md) +- [Bidirectional Replication Between TiDB Clusters](/ticdc/ticdc-bidirectional-replication.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) +- [TiDB 7.1.6 Release Notes](/releases/release-7.1.6.md) + +### autocommit + +Referenced in: +- [Transaction Overview](/transaction-overview.md) +- [Pessimistic Transaction](/pessimistic-transaction.md) +- [Temporary Tables](/temporary-tables.md) +- [Non-Transactional DML](/non-transactional-dml.md) +- [Sample Application: Use Hibernate](/develop/dev-guide-sample-application-java-hibernate.md) +- [Sample Application: Use MySQL Connector/Python](/develop/dev-guide-sample-application-python-mysql-connector.md) +- [TiDB 6.5.3 Release Notes](/releases/release-6.5.3.md) +- [TiDB 7.2.0 Release Notes](/releases/release-7.2.0.md) + +### block_encryption_mode + +Referenced in: +- [Encryption and Compression Functions](/functions-and-operators/encryption-and-compression-functions.md) + +### character_set_client + +Referenced in: +- [GBK Character Set Support](/character-set-gbk.md) +- [Dumpling Overview](/dumpling-overview.md) +- [Information Schema](/information-schema/information-schema-views.md) +- [Character Sets and Collations](/character-set-and-collation.md) +- [SET NAMES](/sql-statements/sql-statement-set-names.md) +- [Views](/views.md) +- [Use Views](/develop/dev-guide-use-views.md) + +### character_set_connection + +Referenced in: +- [GBK Character Set Support](/character-set-gbk.md) +- [Dumpling Overview](/dumpling-overview.md) +- [Character Sets and Collations](/character-set-and-collation.md) +- [SET NAMES](/sql-statements/sql-statement-set-names.md) + +### character_set_database + +Referenced in: +- [Character Sets and Collations](/character-set-and-collation.md) +- [SET NAMES](/sql-statements/sql-statement-set-names.md) + +### character_set_results + +Referenced in: +- [Character Sets and Collations](/character-set-and-collation.md) +- [SET NAMES](/sql-statements/sql-statement-set-names.md) +- [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 Sets and Collations](/character-set-and-collation.md) +- [SET NAMES](/sql-statements/sql-statement-set-names.md) +- [TiDB 5.3.0 Release Notes](/releases/release-5.3.0.md) + +### collation_connection + +Referenced in: +- [String Functions](/functions-and-operators/string-functions.md) +- [Information Schema](/information-schema/information-schema-views.md) +- [Character Sets and Collations](/character-set-and-collation.md) +- [Views](/views.md) +- [Use Views](/develop/dev-guide-use-views.md) + +### collation_database + +Referenced in: +- [Character Sets and Collations](/character-set-and-collation.md) + +### collation_server + +Referenced in: +- [Character Sets and Collations](/character-set-and-collation.md) +- [TiDB 5.0.2 Release Notes](/releases/release-5.0.2.md) +- [TiDB 5.3.0 Release Notes](/releases/release-5.3.0.md) +- [TiDB 5.1.0 Release Notes](/releases/release-5.1.0.md) + +### cte_max_recursion_depth + +Referenced in: +- [High Concurrency Best Practices](/best-practices/high-concurrency-best-practices.md) +- [TiDB 5.1.0 Release Notes](/releases/release-5.1.0.md) + +### datadir + +Referenced in: +- [Limited SQL Features](/tidb-cloud/limited-sql-features.md) + +### ddl_slow_threshold + +Referenced in: +- [SHOW [GLOBAL|SESSION] VARIABLES](/sql-statements/sql-statement-show-variables.md) + +### default_authentication_plugin + +Referenced in: +- [TiDB Features](/basic-features.md) +- [Security Compatibility with MySQL](/security-compatibility-with-mysql.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 5.2.0 Release Notes](/releases/release-5.2.0.md) + +### default_collation_for_utf8mb4 + +Referenced in: +- [Character Sets and Collations](/character-set-and-collation.md) +- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md) +- [TiDB 8.1.2 Release Notes](/releases/release-8.1.2.md) + +### default_password_lifetime + +Referenced in: +- [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) +- [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: +- [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) +- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md) + +### error_count + +Referenced in: +- [TiDB 2.1 RC1 Release Notes](/releases/release-2.1-rc.1.md): Added support for this variable. + +### foreign_key_checks + +Referenced in: +- [Foreign Key](/foreign-key.md) +- [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) +- [TiDB 4.0.13 Release Notes](/releases/release-4.0.13.md) + +### have_openssl + +Referenced in: +- [Certificate-based Authentication](/certificate-authentication.md) + +### have_ssl + +Referenced in: +- [Certificate-based Authentication](/certificate-authentication.md) + +### hostname + +Referenced in: +- [The mysql.user Table](/mysql-schema/mysql-schema-user.md) +- [Best Practices for HAProxy](/best-practices/haproxy-best-practices.md) + +### identity + +Referenced in: +- [Configure SSO for TiDB Dashboard](/dashboard/dashboard-session-sso.md) +- [Secure TiDB Dashboard](/dashboard/dashboard-ops-security.md) +- [Enable TLS Between TiDB Clients and Servers](/enable-tls-between-clients-and-servers.md) +- [Password Management](/password-management.md) + +### init_connect + +Referenced in: +- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md): Improved MySQL compatibility with parsing check +- [TiDB 5.1.0 Release Notes](/releases/release-5.1.0.md): Added as a new feature +- [TiDB 5.0.4 Release Notes](/releases/release-5.0.4.md): Added support for this system variable +- [TiDB 4.0.14 Release Notes](/releases/release-4.0.14.md): Added support for this system variable and associated features + + +### innodb_lock_wait_timeout + +Referenced in: +- [Troubleshoot Lock Conflicts](/troubleshoot-lock-conflicts.md) +- [Pessimistic Transaction Model](/pessimistic-transaction.md) +- [TiKV Configuration File](/tikv-configuration-file.md) +- [TiDB 3.0.6 Release Notes](/releases/release-3.0.6.md) + +### interactive_timeout + +Referenced in: +- [Timeouts in TiDB](/develop/dev-guide-timeouts-in-tidb.md) +- [TiDB FAQs](/faq/manage-cluster-faq.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) +- [Limited SQL Features](/tidb-cloud/limited-sql-features.md) + +### last_insert_id + +Referenced in: +- [AUTO_RANDOM](/auto-random.md) +- [Information Functions](/functions-and-operators/information-functions.md) +- [Prepared Plan Cache](/sql-prepared-plan-cache.md) +- [TiDB 2.1 RC2 Release Notes](/releases/release-2.1-rc.2.md) +- [TiDB 2.1.17 Release Notes](/releases/release-2.1.17.md) +- [TiDB 3.1.0-rc Release Notes](/releases/release-3.1.0-rc.md) +- [TiDB 7.2.0 Release Notes](/releases/release-7.2.0.md) +- [Build a Simple CRUD App with TiDB and Ruby](/develop/dev-guide-sample-application-ruby-mysql2.md) + +### last_plan_from_binding + +Referenced in: +- [SQL Plan Management](/sql-plan-management.md) +- [TiDB 4.0.12 Release Notes](/releases/release-4.0.12.md) + +### last_plan_from_cache + +Referenced in: +- [SQL Prepared Plan Cache](/sql-prepared-plan-cache.md) +- [SQL Non-prepared Plan Cache](/sql-non-prepared-plan-cache.md) +- [Choose Indexes](/choose-index.md) +- [TiDB 4.0.2 Release Notes](/releases/release-4.0.2.md) + +### last_sql_use_alloc + +Referenced in: +- [What's New in TiDB 6.4.0](/releases/release-6.4.0.md): Added support for this variable. + +### license + +Referenced in: +- [TiDB Data Migration Overview](/dm/dm-overview.md) + +### max_allowed_packet + +Referenced in: +- [TiDB Data Migration FAQs](/dm/dm-faq.md) +- [Handle Errors in TiDB Data Migration](/dm/dm-error-handling.md) +- [DM Task Configuration File](/dm/task-configuration-file-full.md) +- [TiDB Cloud Limited SQL Features](/tidb-cloud/limited-sql-features.md) +- [TiDB Configuration File](/tidb-configuration-file.md) +- [TiDB Lightning Configuration](/tidb-lightning/tidb-lightning-configuration.md) +- [Release Notes](/releases/release-6.1.0.md) +- [Release Notes](/releases/release-5.2.4.md) +- [Release Notes](/releases/release-3.0.2.md) +- [Release Notes](/releases/release-2.1.5.md) +- [Release Notes](/releases/release-2.1-rc.2.md) +- [Release Notes](/releases/release-2.0.6.md) + +### max_connections + +Referenced in: +- [TiDB FAQs](/faq/manage-cluster-faq.md) +- [Dynamic Configuration](/dynamic-config.md) +- [Integrate ProxySQL with TiDB](/develop/dev-guide-proxysql-integration.md) +- [TiDB Cloud Data Migration Precheck and Troubleshooting](/tidb-cloud/tidb-cloud-dm-precheck-and-troubleshooting.md) +- [TiDB Configuration File](/tidb-configuration-file.md) + +### max_execution_time + +Referenced in: +- [Best Practices for Java Applications](/best-practices/java-app-best-practices.md) +- [SQL Plan Management](/sql-plan-management.md) +- [SQL Prepared Plan Cache](/sql-prepared-plan-cache.md) +- [Troubleshoot TiDB OOM Issues](/troubleshoot-tidb-oom.md) +- [SQL FAQs](/faq/sql-faq.md) +- [Optimizer Hints](/optimizer-hints.md) +- [Connection Parameters](/develop/dev-guide-connection-parameters.md) +- [Timeouts in TiDB](/develop/dev-guide-timeouts-in-tidb.md) +- [What's New in TiDB 6.4.0](/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 | TiDB SQL Statement Reference](/sql-statements/sql-statement-prepare.md) +- [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: +- [MPP Query Execution](/explain-mpp.md) +- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md) + +### mpp_version + +Referenced in: +- [MPP Query Execution](/explain-mpp.md) +- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md) + +### password_history + +Referenced in: +- [Password Management](/password-management.md) +- [The MYSQL Schema](/mysql-schema/mysql-schema.md) +- [Security Compatibility with MySQL](/security-compatibility-with-mysql.md) +- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md) + +### password_reuse_interval + +Referenced in: +- [Password Management](/password-management.md) +- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md) + +### pd_enable_follower_handle_region + +Referenced in: +- [Tune Region Performance](/tune-region-performance.md) +- [TiDB Features](/basic-features.md) +- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md) +- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md) + +### plugin_dir + +Referenced in: +- [TiDB Cloud Feature Limitations](/tidb-cloud/limited-sql-features.md) +- [TiDB 5.3.0 Release Notes](/releases/release-5.3.0.md) + +### plugin_load + +Referenced in: +- [TiDB Cloud Feature Limitations](/tidb-cloud/limited-sql-features.md) + +### port + +Referenced in: +- [Migrate Data from SQL Files to TiDB](/migrate-from-sql-files-to-tidb.md) +- [TiFlash Deployment Topology](/tiflash-deployment-topology.md) +- [TSO Configuration File](/tso-configuration-file.md) + +### rand_seed1 + +Referenced in: +- No direct references found + +### rand_seed2 + +Referenced in: +- No direct references found + +### require_secure_transport + +Referenced in: +- [Enable TLS Between Clients and Servers](/enable-tls-between-clients-and-servers.md) +- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md) +- [TiDB 6.5.6 Release Notes](/releases/release-6.5.6.md) +- [TiDB 7.1.2 Release Notes](/releases/release-7.1.2.md) +- [TiDB 7.5.1 Release Notes](/releases/release-7.5.1.md) +- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md) +- [TiDB Cloud Feature Limitations](/tidb-cloud/limited-sql-features.md) +- [TiDB Cloud Release Notes - 2022](/tidb-cloud/release-notes-2022.md) +- [Connect to TiDB Dedicated via TLS](/tidb-cloud/tidb-cloud-tls-connect-to-dedicated.md) + +### skip_name_resolve + +Referenced in: +- No direct references found + +### socket + +Referenced in: +- [HAProxy Best Practices](/best-practices/haproxy-best-practices.md) +- [SHOW CONFIG](/sql-statements/sql-statement-show-config.md) + +### sql_mode + +Referenced in: +- [Date and Time Types](/data-type-date-and-time.md) +- [Avoid Unstable Result Set](/develop/dev-guide-unstable-result-set.md) +- [DM Open API](/dm/dm-open-api.md) +- [DM Task Configuration File](/dm/task-configuration-file-full.md) +- [SQL FAQs](/faq/sql-faq.md) +- [Aggregate (GROUP BY) Functions](/functions-and-operators/aggregate-group-by-functions.md) +- [Miscellaneous Functions](/functions-and-operators/miscellaneous-functions.md) +- [Precision Math](/functions-and-operators/precision-math.md) +- [Partitioned Table](/partitioned-table.md) +- [Privilege Management](/privilege-management.md) +- [Schema Object Names](/schema-object-names.md) +- [SQL Mode](/sql-mode.md) +- [SET](/sql-statements/sql-statement-set-variable.md) +- [SHOW ERRORS](/sql-statements/sql-statement-show-errors.md) +- [SHOW WARNINGS](/sql-statements/sql-statement-show-warnings.md) +- [TiDB Lightning FAQ](/tidb-lightning/tidb-lightning-faq.md) +- [TiFlash Results Materialization](/tiflash/tiflash-results-materialization.md) +- [Use TiDB to Read TiFlash](/tiflash/use-tidb-to-read-tiflash.md) +- [User Account Management](/user-account-management.md) + +### sql_require_primary_key + +Referenced in: +- [DM Task Configuration File](/dm/task-configuration-file-full.md) +- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md): Added support for this variable. + +### sql_select_limit + +Referenced in: +- [Prepared Plan Cache](/sql-prepared-plan-cache.md) +- [TiDB 4.0.2 Release Notes](/releases/release-4.0.2.md): Added support for this variable as session and global variable. + +### ssl_ca + +Referenced in: +- [Certificate-Based Authentication](/certificate-authentication.md) +- [Build a Simple CRUD App with Node.js and MySQL (mysql2)](/develop/dev-guide-sample-application-nodejs-mysql2.md) +- [Build a Simple CRUD App with Node.js and MySQL (mysql)](/develop/dev-guide-sample-application-nodejs-mysqljs.md) +- [Build a Simple CRUD App with Node.js and Prisma](/develop/dev-guide-sample-application-nodejs-prisma.md) +- [Build a Simple CRUD App with Node.js and TypeORM](/develop/dev-guide-sample-application-nodejs-typeorm.md) +- [Build a Simple CRUD App with Python and Django](/develop/dev-guide-sample-application-python-django.md) +- [Build a Simple CRUD App with Python and MySQL Connector](/develop/dev-guide-sample-application-python-mysql-connector.md) +- [Build a Simple CRUD App with Python and Peewee](/develop/dev-guide-sample-application-python-peewee.md) +- [Build a Simple CRUD App with Python and PyMySQL](/develop/dev-guide-sample-application-python-pymysql.md) +- [Build a Simple CRUD App with Python and SQLAlchemy](/develop/dev-guide-sample-application-python-sqlalchemy.md) +- [Build a Simple CRUD App with Ruby and mysql2](/develop/dev-guide-sample-application-ruby-mysql2.md) +- [Get Started with Vector Search Using Python](/vector-search-get-started-using-python.md) +- [Integrate Vector Search with Jina AI Embedding](/vector-search-integrate-with-jinaai-embedding.md) +- [Integrate Vector Search with LangChain](/vector-search-integrate-with-langchain.md) +- [Integrate Vector Search with LlamaIndex](/vector-search-integrate-with-llamaindex.md) +- [Integrate Vector Search with SQLAlchemy](/vector-search-integrate-with-sqlalchemy.md) + +### ssl_cert + +Referenced in: +- [Certificate-Based Authentication](/certificate-authentication.md) + +### ssl_key + +Referenced in: +- [Certificate-Based Authentication](/certificate-authentication.md) + +### system_time_zone + +Referenced in: +- [Configure Time Zone](/configure-time-zone.md) +- [TiDB 3.0.8 Release Notes](/releases/release-3.0.8.md) + +### time_zone + +Referenced in: +- [Configure Time Zone](/configure-time-zone.md) +- [Prepared Plan Cache](/sql-prepared-plan-cache.md) +- [Date and Time Types](/data-type-date-and-time.md) +- [SHOW VARIABLES](/sql-statements/sql-statement-show-variables.md) +- [TiDB 2.1.8 Release Notes](/releases/release-2.1.8.md) +- [TiDB 6.0.0-DMR Release Notes](/releases/release-6.0.0-dmr.md) + +### tidb_adaptive_closest_read_threshold + +Referenced in: +- [Follower Read](/follower-read.md) +- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md) +- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md) + +### tidb_allow_tiflash_cop + +Referenced in: +- [TiDB 7.3.0 Release Notes](/releases/release-7.3.0.md) + +### tidb_allow_batch_cop + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 4.0.0-rc.2 Release Notes](/releases/release-4.0.0-rc.2.md) +- [TiDB 4.0.3 Release Notes](/releases/release-4.0.3.md) +- [TiDB TPC-H Performance Test Report -- v4.0 vs. v3.0](/benchmark/v4.0-performance-benchmarking-with-tpch.md) + +### tidb_allow_fallback_to_tikv + +Referenced in: +- [TiDB 5.0.0 Release Notes](/releases/release-5.0.0.md) + +### tidb_allow_function_for_expression_index + +Referenced in: +- [Basic Features](/basic-features.md) +- [CREATE INDEX | TiDB SQL Statement Reference](/sql-statements/sql-statement-create-index.md) +- [TiDB Configuration File](/tidb-configuration-file.md) + +### tidb_allow_mpp + +Referenced in: +- [MPP Query Execution](/explain-mpp.md) +- [Use TiFlash MPP Mode](/tiflash/use-tiflash-mpp-mode.md) +- [TiFlash Results Materialization](/tiflash/tiflash-results-materialization.md) +- [Explore HTAP](/explore-htap.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 TPC-H Performance Test Report -- v5.4](/benchmark/v5.4-performance-benchmarking-with-tpch.md) + +### tidb_allow_remove_auto_inc + +Referenced in: +- [Auto-increment](/auto-increment.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [MySQL Compatibility](/mysql-compatibility.md) +- [Third-Party Tools Compatibility](/develop/dev-guide-third-party-tools-compatibility.md) +- [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_analyze_column_options + +Referenced in: +- [TiDB Performance Tuning Configuration](/tidb-performance-tuning-config.md) +- [TiUP Bench User Guide](/tiup/tiup-bench.md) +- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md) +- [Benchmark TiDB Using ClickHouse](/benchmark/benchmark-tidb-using-ch.md) + +### tidb_analyze_distsql_scan_concurrency + +Referenced in: +- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md) +- [TiDB 8.2.0 Release Notes](/releases/release-8.2.0.md) + +### tidb_analyze_partition_concurrency + +Referenced in: +- [Statistics](/statistics.md) +- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md) +- [TiDB 7.5.3 Release Notes](/releases/release-7.5.3.md) +- [TiDB 8.2.0 Release Notes](/releases/release-8.2.0.md) +- [TiDB 7.5.0 Release Notes](/releases/release-7.5.0.md) +- [TiDB 8.1.1 Release Notes](/releases/release-8.1.1.md) + +### tidb_analyze_version + +Referenced in: +- [Troubleshoot TiDB Out of Memory (OOM) Errors](/troubleshoot-tidb-oom.md) +- [ANALYZE_STATUS](/information-schema/information-schema-analyze-status.md) +- [Statistics](/statistics.md) +- [Configure Memory Usage](/configure-memory-usage.md) +- [SHOW ANALYZE STATUS | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-analyze-status.md) +- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md) +- [TiDB 5.1.4 Release Notes](/releases/release-5.1.4.md) +- [TiDB 5.1.0 Release Notes](/releases/release-5.1.0.md) +- [TiDB 5.2.4 Release Notes](/releases/release-5.2.4.md) +- [TiDB 5.3.0 Release Notes](/releases/release-5.3.0.md) +- [TiDB 7.2.0 Release Notes](/releases/release-7.2.0.md) +- [TiDB 5.4.0 Release Notes](/releases/release-5.4.0.md) + +### tidb_analyze_skip_column_types + +Referenced in: +- [Statistics](/statistics.md) +- [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_auto_analyze_end_time + +Referenced in: +- [Troubleshoot TiDB CPU Performance Issues](/troubleshoot-cpu-issues.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB Troubleshooting Map](/tidb-troubleshooting-map.md) +- [Statistics](/statistics.md) +- [TiDB 5.3.0 Release Notes](/releases/release-5.3.0.md) + +### tidb_auto_analyze_partition_batch_size + +Referenced in: +- [Statistics](/statistics.md) +- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md) +- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md) + +### tidb_auto_analyze_ratio + +Referenced in: +- [TiDB 2.1.8 Release Notes](/releases/release-2.1.8.md) +- [TiDB 6.0.0-DMR Release Notes](/releases/release-6.0.0-dmr.md) + +### tidb_auto_analyze_start_time + +Referenced in: +- [Statistics](/statistics.md) +- [TiDB Troubleshooting Map](/tidb-troubleshooting-map.md) +- [Troubleshoot TiDB CPU Performance Issues](/troubleshoot-cpu-issues.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 5.3.0 Release Notes](/releases/release-5.3.0.md) + +### tidb_auto_build_stats_concurrency + +Referenced in: +- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md) + +### tidb_backoff_lock_fast + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 5.4.0 Release Notes](/releases/release-5.4.0.md) + +### tidb_backoff_weight + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 3.0.3 Release Notes](/releases/release-3.0.3.md) + +### tidb_batch_commit + +Referenced in: +- [TiDB 3.0 GA Release Notes](/releases/release-3.0-ga.md) +- [TiDB 3.0 Beta Release Notes](/releases/release-3.0-beta.md) + +### tidb_batch_delete + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) + +### tidb_batch_insert + +Referenced in: +- [TiDB 2.0.6 Release Notes](/releases/release-2.0.6.md) + +### tidb_batch_pending_tiflash_count + +Referenced in: +- No direct references found + +### tidb_broadcast_join_threshold_count + +Referenced in: +- [MPP Execution](/explain-mpp.md) +- [Use TiFlash MPP Mode](/tiflash/use-tiflash-mpp-mode.md) +- [Tune TiFlash Performance](/tiflash/tune-tiflash-performance.md) +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### tidb_broadcast_join_threshold_size + +Referenced in: +- [MPP Execution](/explain-mpp.md) +- [Use TiFlash MPP Mode](/tiflash/use-tiflash-mpp-mode.md) +- [Tune TiFlash Performance](/tiflash/tune-tiflash-performance.md) +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### tidb_build_stats_concurrency + +Referenced in: +- [Statistics](/statistics.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB Cloud v8.1 Performance Benchmarking with TPC-C](/tidb-cloud/v8.1-performance-benchmarking-with-tpcc.md) +- [TiDB Cloud v6.5 Performance Benchmarking with TPC-C](/tidb-cloud/v6.5-performance-benchmarking-with-tpcc.md) +- [TiDB Cloud v7.1 Performance Benchmarking with TPC-C](/tidb-cloud/v7.1-performance-benchmarking-with-tpcc.md) +- [TiDB Cloud v7.5 Performance Benchmarking with TPC-C](/tidb-cloud/v7.5-performance-benchmarking-with-tpcc.md) +- [TiDB 7.5.0 Release Notes](/releases/release-7.5.0.md) +- [TiDB 4.0 Performance Benchmarking with TPC-H](/benchmark/v4.0-performance-benchmarking-with-tpch.md) + +### tidb_build_sampling_stats_concurrency + +Referenced in: +- [Statistics](/statistics.md) +- [TiDB 7.5.0 Release Notes](/releases/release-7.5.0.md) + +### tidb_capture_plan_baselines + +Referenced in: +- [SQL Plan Management](/sql-plan-management.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 5.0.0 Release Notes](/releases/release-5.0.0.md) +- [TiDB 4.0.0-rc.1 Release Notes](/releases/release-4.0.0-rc.1.md) + +### tidb_cdc_write_source + +Referenced in: +- [Limited SQL Features](/tidb-cloud/limited-sql-features.md) +- [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) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [Upgrade FAQs](/faq/upgrade-faq.md) +- [Limited SQL Features](/tidb-cloud/limited-sql-features.md) +- [TiDB Configuration File](/tidb-configuration-file.md) + +### tidb_checksum_table_concurrency + +Referenced in: +- [TiDB Lightning Configuration](/tidb-lightning/tidb-lightning-configuration.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) + +### tidb_committer_concurrency + +Referenced in: +- [Grafana TiDB Dashboard](/grafana-tidb-dashboard.md) +- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md) +- [TiDB Cloud Release Notes - 2022](/tidb-cloud/release-notes-2022.md) + +### tidb_config + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [Limited SQL Features](/tidb-cloud/limited-sql-features.md) +- [TiDB 1.1 Beta Release Notes](/releases/release-1.1-beta.md) +- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md) + +### tidb_constraint_check_in_place + +Referenced in: +- [Constraints](/constraints.md) +- [Task Configuration File](/dm/task-configuration-file-full.md) +- [Error Codes and Troubleshooting](/error-codes.md) +- [Pessimistic Transaction Model](/pessimistic-transaction.md) +- [TiDB 2.1.5 Release Notes](/releases/release-2.1.5.md) +- [COMMIT | TiDB SQL Statement Reference](/sql-statements/sql-statement-commit.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB Transaction Overview](/transaction-overview.md) + +### tidb_constraint_check_in_place_pessimistic + +Referenced in: +- [Constraints](/constraints.md) +- [Dynamic Configuration](/dynamic-config.md) +- [Error Codes and Troubleshooting](/error-codes.md) +- [Pessimistic Transaction Model](/pessimistic-transaction.md) +- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md) +- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md) +- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md) +- [SAVEPOINT | TiDB SQL Statement Reference](/sql-statements/sql-statement-savepoint.md) +- [TiDB Configuration File](/tidb-configuration-file.md) + +### tidb_cost_model_version + +Referenced in: +- [TiDB Cost Model](/cost-model.md) +- [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: +- [Timestamp Oracle in TiDB](/tso.md) +- [External Timestamp in TiDB](/tidb-external-ts.md) +- [Disaster Recovery Secondary Cluster](/dr-secondary-cluster.md) +- [TiDB Specific Functions](/functions-and-operators/tidb-functions.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [FLASHBACK CLUSTER | TiDB SQL Statement Reference](/sql-statements/sql-statement-flashback-cluster.md) +- [Check Upstream and Downstream Versions](/ticdc/ticdc-upstream-downstream-check.md) +- [SHOW BUILTINS | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-builtins.md) +- [TiCDC FAQs](/ticdc/ticdc-faq.md) + +### tidb_ddl_disk_quota + +Referenced in: +- [Limited SQL Features](/tidb-cloud/limited-sql-features.md) +- [TiDB Distributed Execution Framework](/tidb-distributed-execution-framework.md) +- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md) + +### tidb_ddl_enable_fast_reorg + +Referenced in: +- [Basic Features](/basic-features.md) +- [Hardware and Software Requirements](/hardware-and-software-requirements.md) +- [IMPORT INTO | TiDB SQL Statement Reference](/sql-statements/sql-statement-import-into.md) +- [ADMIN SHOW DDL | TiDB SQL Statement Reference](/sql-statements/sql-statement-admin-show-ddl.md) +- [CREATE INDEX | TiDB SQL Statement Reference](/sql-statements/sql-statement-create-index.md) +- [TiDB Distributed Execution Framework](/tidb-distributed-execution-framework.md) +- [TiDB Configuration File](/tidb-configuration-file.md) +- [Check Environment Before Deployment](/check-before-deployment.md) +- [Limited SQL Features](/tidb-cloud/limited-sql-features.md) +- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md) +- [TiDB 7.5.0 Release Notes](/releases/release-7.5.0.md) +- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.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 8.1.2 Release Notes](/releases/release-8.1.2.md) +- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md) +- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md) + +### tidb_ddl_error_count_limit + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [Limited SQL Features](/tidb-cloud/limited-sql-features.md) +- [SQL FAQs](/faq/sql-faq.md) +- [TiDB Distributed Execution Framework](/tidb-distributed-execution-framework.md) + +### tidb_ddl_flashback_concurrency + +Referenced in: +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md) +- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md) + +### tidb_ddl_reorg_batch_size + +Referenced in: +- [TiDB DDL](/ddl-introduction.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [CREATE INDEX | TiDB SQL Statement Reference](/sql-statements/sql-statement-create-index.md) +- [ADMIN ALTER DDL | TiDB SQL Statement Reference](/sql-statements/sql-statement-admin-alter-ddl.md) +- [Limited SQL Features](/tidb-cloud/limited-sql-features.md) +- [SQL FAQs](/faq/sql-faq.md) +- [TiDB Distributed Execution Framework](/tidb-distributed-execution-framework.md) +- [SQL Plan Management Best Practices](/explain-walkthrough.md) + +### tidb_ddl_reorg_priority + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [CREATE INDEX | TiDB SQL Statement Reference](/sql-statements/sql-statement-create-index.md) +- [Limited SQL Features](/tidb-cloud/limited-sql-features.md) +- [SQL FAQs](/faq/sql-faq.md) +- [TiDB Distributed Execution Framework](/tidb-distributed-execution-framework.md) + +### tidb_ddl_reorg_worker_cnt + +Referenced in: +- [TiDB DDL](/ddl-introduction.md) +- [Troubleshoot CPU Issues](/troubleshoot-cpu-issues.md) +- [CREATE INDEX | TiDB SQL Statement Reference](/sql-statements/sql-statement-create-index.md) +- [ADMIN SHOW DDL | TiDB SQL Statement Reference](/sql-statements/sql-statement-admin-show-ddl.md) +- [ADMIN ALTER DDL | TiDB SQL Statement Reference](/sql-statements/sql-statement-admin-alter-ddl.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [SQL Plan Management Best Practices](/explain-walkthrough.md) +- [SQL FAQs](/faq/sql-faq.md) +- [TiDB Cloud Limited SQL Features](/tidb-cloud/limited-sql-features.md) +- [SQL Best Practices](/develop/dev-guide-optimize-sql-best-practices.md) +- [TiDB Distributed Execution Framework](/tidb-distributed-execution-framework.md) +- [Online Workloads and ADD INDEX Operations](/benchmark/online-workloads-and-add-index-operations.md) +- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md) +- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md) +- [TiDB 2.1.4 Release Notes](/releases/release-2.1.4.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_ddl_reorg_max_write_speed + +Referenced in: +- [ADMIN ALTER DDL | TiDB SQL Statement Reference](/sql-statements/sql-statement-admin-alter-ddl.md) +- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md) + +### tidb_enable_dist_task + +Referenced in: +- [TiDB 8.1.0 Release Notes](/releases/release-8.1.0.md) +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) +- [Upgrade TiDB Using TiUP](/smooth-upgrade-tidb.md) +- [TiDB 7.3.0 Release Notes](/releases/release-7.3.0.md) +- [TiDB 7.5.0 Release Notes](/releases/release-7.5.0.md) +- [IMPORT INTO | TiDB SQL Statement Reference](/sql-statements/sql-statement-import-into.md) +- [ADMIN SHOW DDL | TiDB SQL Statement Reference](/sql-statements/sql-statement-admin-show-ddl.md) +- [ADMIN ALTER DDL | TiDB SQL Statement Reference](/sql-statements/sql-statement-admin-alter-ddl.md) +- [TiDB Global Sort](/tidb-global-sort.md) +- [TiDB Distributed Execution Framework](/tidb-distributed-execution-framework.md) + +### tidb_cloud_storage_uri + +Referenced in: +- [TiDB 8.1.1 Release Notes](/releases/release-8.1.1.md) +- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md) +- [IMPORT INTO | TiDB SQL Statement Reference](/sql-statements/sql-statement-import-into.md) +- [TiDB Global Sort](/tidb-global-sort.md) + +### tidb_default_string_match_selectivity + +Referenced in: +- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md) + +### tidb_disable_txn_auto_retry + +Referenced in: +- [TiDB Optimistic Transaction Model](/optimistic-transaction.md) +- [TiDB Transaction Overview](/transaction-overview.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 3.0.0-rc.2 Release Notes](/releases/release-3.0.0-rc.2.md) +- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md) +- [TiDB 3.0 GA Release Notes](/releases/release-3.0-ga.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 2.1 Beta Release Notes](/releases/release-2.1-beta.md) +- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md) +- [TiDB TPC-C Performance Test Report -- v3.0 vs v2.1](/benchmark/v3.0-performance-benchmarking-with-sysbench.md) +- [How to Test TiDB Using Sysbench](/benchmark/benchmark-tidb-using-sysbench.md) +- [TiDB TPC-C Performance Test Report -- v4.0 vs v3.0](/benchmark/v4.0-performance-benchmarking-with-tpcc.md) + +### tidb_distsql_scan_concurrency + +Referenced in: +- [TiDB Best Practices](/best-practices/tidb-best-practices.md) +- [Dumpling Overview](/dumpling-overview.md) +- [Troubleshoot Out of Memory Errors](/troubleshoot-tidb-oom.md) +- [INFORMATION_SCHEMA SLOW_QUERY Table](/information-schema/information-schema-slow-query.md) +- [Statistics in TiDB](/statistics.md) +- [Configure Memory Usage](/configure-memory-usage.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [SQL FAQs](/faq/sql-faq.md) +- [TiDB Cloud v8.1 TPC-C Performance Test Report](/tidb-cloud/v8.1-performance-benchmarking-with-tpcc.md) +- [TiDB Cloud v7.5 TPC-C Performance Test Report](/tidb-cloud/v7.5-performance-benchmarking-with-tpcc.md) +- [TiDB Cloud v7.1 TPC-C Performance Test Report](/tidb-cloud/v7.1-performance-benchmarking-with-tpcc.md) +- [TiDB Cloud v6.5 TPC-C Performance Test Report](/tidb-cloud/v6.5-performance-benchmarking-with-tpcc.md) +- [TiDB TPC-H Performance Test Report -- v4.0 vs v3.0](/benchmark/v4.0-performance-benchmarking-with-tpch.md) +- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md) + +### tidb_dml_batch_size + +Referenced in: +- [LOAD DATA | TiDB SQL Statement Reference](/sql-statements/sql-statement-load-data.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md) +- [TiDB 4.0.0-beta Release Notes](/releases/release-4.0.0-beta.md) +- [TiDB 5.0.0 Release Notes](/releases/release-5.0.0.md) +- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md) + +### tidb_dml_type + +Referenced in: +- [Identify Slow Queries](/identify-expensive-queries.md) +- [TiDB Performance Tuning Methods](/tidb-performance-tuning-config.md) +- [IMPORT INTO vs TiDB Lightning](/tidb-lightning/import-into-vs-tidb-lightning.md) +- [Basic Features](/basic-features.md) +- [Configure Memory Usage](/configure-memory-usage.md) +- [TiDB Configuration File](/tidb-configuration-file.md) +- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md) +- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.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: +- [Transaction Overview](/transaction-overview.md) +- [Basic Features](/basic-features.md) +- [TiDB Cluster Management FAQs](/faq/manage-cluster-faq.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [TiDB 5.0.0 Release Notes](/releases/release-5.0.0.md) +- [TiDB Sysbench Performance Test Report - v5.0 vs. v4.0](/benchmark/benchmark-sysbench-v5-vs-v4.md) +- [TiDB Sysbench Performance Test Report - v5.4.0 vs. v5.3.0](/benchmark/benchmark-sysbench-v5.4.0-vs-v5.3.0.md) +- [TiDB Sysbench Performance Test Report - v5.1.0 vs. v5.0.2](/benchmark/benchmark-sysbench-v5.1.0-vs-v5.0.2.md) +- [TiDB Sysbench Performance Test Report - v6.2.0 vs. v6.1.0](/benchmark/benchmark-sysbench-v6.2.0-vs-v6.1.0.md) +- [TiDB Sysbench Performance Test Report - v6.0.0 vs. v5.4.0](/benchmark/benchmark-sysbench-v6.0.0-vs-v5.4.0.md) +- [TiDB Sysbench Performance Test Report - v6.1.0 vs. v6.0.0](/benchmark/benchmark-sysbench-v6.1.0-vs-v6.0.0.md) +- [TiDB v5.4 TPC-C Performance Test Report](/benchmark/v5.4-performance-benchmarking-with-tpcc.md) +- [TiDB v5.2 TPC-C Performance Test Report](/benchmark/v5.2-performance-benchmarking-with-tpcc.md) +- [TiDB v5.3 TPC-C Performance Test Report](/benchmark/v5.3-performance-benchmarking-with-tpcc.md) +- [TiDB v5.0 TPC-C Performance Test Report](/benchmark/v5.0-performance-benchmarking-with-tpcc.md) +- [TiDB Sysbench Performance Test Report - v5.3.0 vs. v5.2.2](/benchmark/benchmark-sysbench-v5.3.0-vs-v5.2.2.md) +- [TiDB v5.1 TPC-C Performance Test Report](/benchmark/v5.1-performance-benchmarking-with-tpcc.md) +- [TiDB v6.2 TPC-C Performance Test Report](/benchmark/v6.2-performance-benchmarking-with-tpcc.md) +- [TiDB Sysbench Performance Test Report - v5.2.0 vs. v5.1.1](/benchmark/benchmark-sysbench-v5.2.0-vs-v5.1.1.md) +- [TiDB v6.0 TPC-C Performance Test Report](/benchmark/v6.0-performance-benchmarking-with-tpcc.md) +- [TiDB v6.1 TPC-C Performance Test Report](/benchmark/v6.1-performance-benchmarking-with-tpcc.md) + +### tidb_enable_async_commit + +Referenced in: +- [Transaction Overview](/transaction-overview.md) +- [Basic Features](/basic-features.md) +- [TiDB Cluster Management FAQs](/faq/manage-cluster-faq.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [TiDB 5.0.0-rc Release Notes](/releases/release-5.0.0-rc.md) +- [TiDB 5.0.0 Release Notes](/releases/release-5.0.0.md) +- [TiDB Sysbench Performance Test Report - v5.0 vs. v4.0](/benchmark/benchmark-sysbench-v5-vs-v4.md) +- [TiDB Sysbench Performance Test Report - v5.4.0 vs. v5.3.0](/benchmark/benchmark-sysbench-v5.4.0-vs-v5.3.0.md) +- [TiDB Sysbench Performance Test Report - v5.1.0 vs. v5.0.2](/benchmark/benchmark-sysbench-v5.1.0-vs-v5.0.2.md) +- [TiDB Sysbench Performance Test Report - v6.2.0 vs. v6.1.0](/benchmark/benchmark-sysbench-v6.2.0-vs-v6.1.0.md) +- [TiDB Sysbench Performance Test Report - v6.0.0 vs. v5.4.0](/benchmark/benchmark-sysbench-v6.0.0-vs-v5.4.0.md) +- [TiDB Sysbench Performance Test Report - v6.1.0 vs. v6.0.0](/benchmark/benchmark-sysbench-v6.1.0-vs-v6.0.0.md) +- [TiDB v5.4 TPC-C Performance Test Report](/benchmark/v5.4-performance-benchmarking-with-tpcc.md) +- [TiDB v5.2 TPC-C Performance Test Report](/benchmark/v5.2-performance-benchmarking-with-tpcc.md) +- [TiDB v5.3 TPC-C Performance Test Report](/benchmark/v5.3-performance-benchmarking-with-tpcc.md) +- [TiDB v5.0 TPC-C Performance Test Report](/benchmark/v5.0-performance-benchmarking-with-tpcc.md) +- [TiDB Sysbench Performance Test Report - v5.3.0 vs. v5.2.2](/benchmark/benchmark-sysbench-v5.3.0-vs-v5.2.2.md) +- [TiDB v5.1 TPC-C Performance Test Report](/benchmark/v5.1-performance-benchmarking-with-tpcc.md) +- [TiDB v6.2 TPC-C Performance Test Report](/benchmark/v6.2-performance-benchmarking-with-tpcc.md) +- [TiDB Sysbench Performance Test Report - v5.2.0 vs. v5.1.1](/benchmark/benchmark-sysbench-v5.2.0-vs-v5.1.1.md) +- [TiDB v6.0 TPC-C Performance Test Report](/benchmark/v6.0-performance-benchmarking-with-tpcc.md) +- [TiDB v6.1 TPC-C Performance Test Report](/benchmark/v6.1-performance-benchmarking-with-tpcc.md) + +### tidb_enable_analyze_snapshot + +Referenced in: +- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md) + +### tidb_enable_auto_analyze + +Referenced in: +- [TiDB Performance Tuning Methods](/tidb-performance-tuning-config.md) +- [SQL Plan Replayer User Guide](/sql-plan-replayer.md) +- [Statistics in TiDB](/statistics.md) +- [SQL FAQs](/faq/sql-faq.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md) + +### tidb_enable_auto_analyze_priority_queue + +Referenced in: +- [Statistics in TiDB](/statistics.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 8.2.0 Release Notes](/releases/release-8.2.0.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_auto_increment_in_generated + +Referenced in: +- [CREATE INDEX | TiDB SQL Statement Reference](/sql-statements/sql-statement-create-index.md) +- [TiDB 5.2.0 Release Notes](/releases/release-5.2.0.md) + +### tidb_enable_batch_dml + +Referenced in: +- [TiDB Cloud Release Notes - 2022](/tidb-cloud/release-notes-2022.md) + +### tidb_enable_cascades_planner + +Referenced in: +- [Basic Features](/basic-features.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 3.0 Beta Release Notes](/releases/release-3.0-beta.md) + +### tidb_enable_check_constraint + +Referenced in: +- [INFORMATION_SCHEMA TIDB_CHECK_CONSTRAINTS Table](/information-schema/information-schema-tidb-check-constraints.md) +- [INFORMATION_SCHEMA CHECK_CONSTRAINTS Table](/information-schema/information-schema-check-constraints.md) +- [Constraints](/constraints.md) +- [TiDB 7.2.0 Release Notes](/releases/release-7.2.0.md) + +### tidb_enable_chunk_rpc + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) + +### tidb_enable_clustered_index + +Referenced in: +- [Clustered Indexes](/clustered-indexes.md) +- [Backup & Restore Overview](/br/backup-and-restore-overview.md) +- [TiDB Lightning Configuration](/tidb-lightning/tidb-lightning-configuration.md) +- [TiDB Configuration File](/tidb-configuration-file.md) +- [TiDB 5.0.0-rc Release Notes](/releases/release-5.0.0-rc.md) +- [TiDB 5.0 GA Release Notes](/releases/release-5.0.0.md) +- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md) +- [Schema Design Overview](/develop/dev-guide-schema-design-overview.md) +- [Create a Table](/develop/dev-guide-create-table.md) +- [TiDB TPC-C Performance Test Report -- v6.1 vs. v6.0](/benchmark/v6.1-performance-benchmarking-with-tpcc.md) +- [TiDB TPC-C Performance Test Report -- v5.3 vs. v5.2](/benchmark/v5.3-performance-benchmarking-with-tpcc.md) +- [TiDB Sysbench Performance Test Report -- v6.0.0 vs. v5.4.0](/benchmark/benchmark-sysbench-v6.0.0-vs-v5.4.0.md) +- [TiDB Sysbench Performance Test Report -- v5.4.0 vs. v5.3.0](/benchmark/benchmark-sysbench-v5.4.0-vs-v5.3.0.md) +- [TiDB Sysbench Performance Test Report -- v5.1.0 vs. v5.0.2](/benchmark/benchmark-sysbench-v5.1.0-vs-v5.0.2.md) +- [TiDB Sysbench Performance Test Report -- v5.0 vs. v4.0](/benchmark/benchmark-sysbench-v5-vs-v4.md) +- [TiDB Sysbench Performance Test Report -- v6.2.0 vs. v6.1.0](/benchmark/benchmark-sysbench-v6.2.0-vs-v6.1.0.md) +- [TiDB TPC-C Performance Test Report -- v5.4 vs. v5.3](/benchmark/v5.4-performance-benchmarking-with-tpcc.md) +- [TiDB Sysbench Performance Test Report -- v6.1.0 vs. v6.0.0](/benchmark/benchmark-sysbench-v6.1.0-vs-v6.0.0.md) +- [TiDB TPC-C Performance Test Report -- v5.2 vs. v5.1](/benchmark/v5.2-performance-benchmarking-with-tpcc.md) +- [TiDB Sysbench Performance Test Report -- v5.3.0 vs. v5.2.2](/benchmark/benchmark-sysbench-v5.3.0-vs-v5.2.2.md) +- [TiDB TPC-C Performance Test Report -- v5.0 vs. v4.0](/benchmark/v5.0-performance-benchmarking-with-tpcc.md) +- [TiDB TPC-C Performance Test Report -- v5.1 vs. v5.0](/benchmark/v5.1-performance-benchmarking-with-tpcc.md) + +### tidb_enable_ddl + +Referenced in: +- [Dynamic Configuration](/dynamic-config.md) +- [Topology Reference](/tiup/tiup-cluster-topology-reference.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [TiDB Configuration File](/tidb-configuration-file.md) + +### tidb_enable_collect_execution_info + +Referenced in: +- [Dynamic Configuration](/dynamic-config.md) +- [INFORMATION_SCHEMA TIDB_INDEX_USAGE Table](/information-schema/information-schema-tidb-index-usage.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [Identify Slow Queries](/identify-slow-queries.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [TiDB Configuration File](/tidb-configuration-file.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 7.6.0 Release Notes](/releases/release-7.6.0.md) +- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md) + +### tidb_enable_column_tracking + +Referenced in: +- [TiDB 8.2.0 Release Notes](/releases/release-8.2.0.md) +- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md) +- [TiDB 5.4.0 Release Notes](/releases/release-5.4.0.md) + +### tidb_enable_enhanced_security + +Referenced in: +- [TiDB Dashboard User Guide](/dashboard/dashboard-user.md) +- [Basic Features](/basic-features.md) +- [BACKUP | TiDB SQL Statement Reference](/sql-statements/sql-statement-backup.md) +- [IMPORT INTO | TiDB SQL Statement Reference](/sql-statements/sql-statement-import-into.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [TiDB Configuration File](/tidb-configuration-file.md) +- [TiDB 5.1.0 Release Notes](/releases/release-5.1.0.md) + +### tidb_enable_exchange_partition + +Referenced in: +- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md) +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### tidb_enable_extended_stats + +Referenced in: +- [Extended Statistics](/extended-statistics.md) + +### tidb_enable_external_ts_read + +Referenced in: +- [External Timestamp Read](/tidb-external-ts.md) +- [Secondary Cluster for Disaster Recovery](/dr-secondary-cluster.md) +- [Check Data Consistency Between Upstream and Downstream](/ticdc/ticdc-upstream-downstream-check.md) +- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md) + +### tidb_enable_fast_analyze + +Referenced in: +- [Basic Features](/basic-features.md) +- [Extended Statistics](/extended-statistics.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_table_check + +Referenced in: +- [TiDB 7.2.0 Release Notes](/releases/release-7.2.0.md) + +### tidb_enable_foreign_key + +Referenced in: +- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md) +- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md) + +### tidb_enable_gc_aware_memory_track + +Referenced in: +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md) + +### tidb_enable_global_index + +Referenced in: +- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md) +- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.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 Parameters](/develop/dev-guide-connection-parameters.md) +- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md) + +### tidb_enable_non_prepared_plan_cache + +Referenced in: +- [Performance Tuning Methods](/tidb-performance-tuning-config.md) +- [Non-Prepared Plan Cache](/sql-non-prepared-plan-cache.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 7.2.0 Release Notes](/releases/release-7.2.0.md) +- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md) +- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md) + +### tidb_enable_non_prepared_plan_cache_for_dml + +Referenced in: +- [Non-Prepared Plan Cache](/sql-non-prepared-plan-cache.md) +- [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) +- [SHOW VARIABLES](/sql-statements/sql-statement-show-variables.md) +- [SELECT](/sql-statements/sql-statement-select.md) +- [Pessimistic Transaction Model](/pessimistic-transaction.md) +- [TiDB 5.0.0 Release Notes](/releases/release-5.0.0.md) +- [TiDB 5.1.0 Release Notes](/releases/release-5.1.0.md) +- [TiDB 5.3.0 Release Notes](/releases/release-5.3.0.md) + +### tidb_enable_noop_variables + +Referenced in: +- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md) + +### tidb_enable_null_aware_anti_join + +Referenced in: +- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md) +- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md) + +### tidb_enable_outer_join_reorder + +Referenced in: +- [Join Reorder](/join-reorder.md) +- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md) +- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md) +- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md) +- [TiDB 6.1.1 Release Notes](/releases/release-6.1.1.md) + +### tidb_enable_parallel_apply + +Referenced in: +- [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 7.3.0 Release Notes](/releases/release-7.3.0.md) +- [TiDB 5.4.1 Release Notes](/releases/release-5.4.1.md) + +### tidb_enable_pipelined_window_function + +Referenced in: +- [Window Functions](/functions-and-operators/window-functions.md) + +### tidb_enable_plan_replayer_capture + +Referenced in: +- [SQL Plan Management](/sql-plan-replayer.md) +- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md) + +### tidb_enable_plan_replayer_continuous_capture + +Referenced in: +- [SQL Plan Management](/sql-plan-replayer.md) +- [TiDB 7.0.0 Release Notes](/releases/release-7.0.0.md) + +### tidb_enable_prepared_plan_cache + +Referenced in: +- [Prepared Plan Cache](/sql-prepared-plan-cache.md) +- [TiDB Dashboard FAQ](/dashboard/dashboard-faq.md) +- [TiDB Cloud Release Notes - 2022](/tidb-cloud/release-notes-2022.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) +- [How to Test TiDB Using Sysbench](/benchmark/benchmark-tidb-using-sysbench.md) + +### tidb_enable_prepared_plan_cache_memory_monitor + +Referenced in: +- [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) +- [TiDB 5.3.0 Release Notes](/releases/release-5.3.0.md) +- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md) + +### tidb_enable_rate_limit_action + +Referenced in: +- [Troubleshoot Out of Memory Errors](/troubleshoot-tidb-oom.md) +- [Configure Memory Usage](/configure-memory-usage.md) +- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md) + +### tidb_enable_reuse_chunk + +Referenced in: +- [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: +- [TiDB Functions](/functions-and-operators/tidb-functions.md) +- [Data Integrity Check](/ticdc/ticdc-integrity-check.md) +- [TiDB 7.5.1 Release Notes](/releases/release-7.5.1.md) +- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md) +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) + +### tidb_enable_slow_log + +Referenced in: +- [TiDB Dashboard Slow Query Page](/dashboard/dashboard-slow-query.md) +- [Identify Slow Queries](/identify-slow-queries.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [Dynamic Configuration](/dynamic-config.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [TiDB Configuration File](/tidb-configuration-file.md) + +### tidb_enable_stmt_summary + +Referenced in: +- [SQL Plan Management](/sql-plan-management.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [Statement Summary Tables](/statement-summary-tables.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [TiDB 3.0.4 Release Notes](/releases/release-3.0.4.md) + +### tidb_enable_strict_double_type_check + +Referenced in: +- [TiDB 5.0.0 Release Notes](/releases/release-5.0.0.md) + +### tidb_enable_table_partition + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 3.0.8 Release Notes](/releases/release-3.0.8.md) +- [TiDB 4.0.13 Release Notes](/releases/release-4.0.13.md) +- [TiDB 8.4.0 Release Notes](/releases/release-8.4.0.md) + +### tidb_enable_telemetry + +Referenced in: +- [TiDB 6.1.5 Release Notes](/releases/release-6.1.5.md) +- [TiDB 6.5.1 Release Notes](/releases/release-6.5.1.md) +- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md) +- [TiDB 8.1.0 Release Notes](/releases/release-8.1.0.md) + +### tidb_enable_tiflash_read_for_write_stmt + +Referenced in: +- [Use TiDB to Read TiFlash](/tiflash/use-tidb-to-read-tiflash.md) +- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.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_enable_top_sql + +Referenced in: +- [Top SQL](/dashboard/top-sql.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [TiDB 5.4.0 Release Notes](/releases/release-5.4.0.md) + +### tidb_enable_tso_follower_proxy + +Referenced in: +- [PD Microservices](/pd-microservices.md) +- [Basic Features](/basic-features.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md) +- [TiDB 5.3.0 Release Notes](/releases/release-5.3.0.md) + +### tidb_enable_vectorized_expression + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 5.0.6 Release Notes](/releases/release-5.0.6.md) +- [TiDB 5.1.4 Release Notes](/releases/release-5.1.4.md) +- [TiDB 4.0.16 Release Notes](/releases/release-4.0.16.md) +- [TiDB 5.2.4 Release Notes](/releases/release-5.2.4.md) +- [TiDB 5.4.1 Release Notes](/releases/release-5.4.1.md) + +### tidb_enforce_mpp + +Referenced in: +- [TiFlash Results Materialization](/tiflash/tiflash-results-materialization.md) +- [Use TiFlash MPP Mode](/tiflash/use-tiflash-mpp-mode.md) +- [Troubleshoot TiFlash](/tiflash/troubleshoot-tiflash.md) +- [Tune TiFlash Performance](/tiflash/tune-tiflash-performance.md) +- [Stale Read](/stale-read.md) +- [Explore HTAP](/explore-htap.md) +- [TiDB Configuration File](/tidb-configuration-file.md) +- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md) +- [TiDB 5.1.0 Release Notes](/releases/release-5.1.0.md) +- [TiDB 5.0.4 Release Notes](/releases/release-5.0.4.md) +- [TiDB 5.1.5 Release Notes](/releases/release-5.1.5.md) +- [TiDB 5.4.2 Release Notes](/releases/release-5.4.2.md) + +### tidb_executor_concurrency + +Referenced in: +- [Troubleshoot Out of Memory Errors](/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 5.0.0 Release Notes](/releases/release-5.0.0.md) + +### tidb_expensive_query_time_threshold + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [Identify Slow Queries](/identify-expensive-queries.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [Dynamic Configuration](/dynamic-config.md) +- [TiDB Configuration File](/tidb-configuration-file.md) + +### tidb_external_ts + +Referenced in: +- [External Timestamp Read](/tidb-external-ts.md) +- [Secondary Cluster for Disaster Recovery](/dr-secondary-cluster.md) +- [Stale Read](/stale-read.md) +- [Check Data Consistency Between Upstream and Downstream](/ticdc/ticdc-upstream-downstream-check.md) +- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md) + +### tidb_force_priority + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [SQL FAQs](/faq/sql-faq.md) +- [Dynamic Configuration](/dynamic-config.md) +- [TiDB Configuration File](/tidb-configuration-file.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.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: +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [GC Configuration](/garbage-collection-configuration.md) +- [TiDB 5.0.0 Release Notes](/releases/release-5.0.0.md) +- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md) + +### tidb_gc_enable + +Referenced in: +- [TiDB Troubleshooting Map](/tidb-troubleshooting-map.md) +- [Migrate Data from TiDB to TiDB](/migrate-from-tidb-to-tidb.md) +- [Secondary Cluster for Disaster Recovery](/dr-secondary-cluster.md) +- [Migrate Data from TiDB to MySQL](/migrate-from-tidb-to-mysql.md) +- [Replicate Data Between Primary and Secondary Clusters](/replicate-between-primary-and-secondary-clusters.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [Migrate from Self-Hosted TiDB to TiDB Cloud](/tidb-cloud/migrate-from-op-tidb.md) +- [GC Configuration](/garbage-collection-configuration.md) +- [TiDB 5.0.0 Release Notes](/releases/release-5.0.0.md) + +### tidb_gc_life_time + +Referenced in: +- [TiKV In-Memory Engine](/tikv-in-memory-engine.md) +- [TiDB Troubleshooting Map](/tidb-troubleshooting-map.md) +- [Error Codes and Troubleshooting](/error-codes.md) +- [Dumpling Overview](/dumpling-overview.md) +- [Back up and Restore Incrementally](/br/br-incremental-guide.md) +- [Read Historical Data](/read-historical-data.md) +- [FLASHBACK TABLE | TiDB SQL Statement Reference](/sql-statements/sql-statement-flashback-table.md) +- [FLASHBACK DATABASE | TiDB SQL Statement Reference](/sql-statements/sql-statement-flashback-database.md) +- [FLASHBACK CLUSTER | TiDB SQL Statement Reference](/sql-statements/sql-statement-flashback-cluster.md) +- [SQL FAQs](/faq/sql-faq.md) +- [Create a Changefeed with TiDB Cloud as Downstream](/tidb-cloud/changefeed-sink-to-tidb-cloud.md) +- [Replicate Data to Kafka](/ticdc/ticdc-sink-to-kafka.md) +- [TiCDC FAQs](/ticdc/ticdc-faq.md) +- [Create a Changefeed with MySQL as Downstream](/tidb-cloud/changefeed-sink-to-mysql.md) +- [GC Configuration](/garbage-collection-configuration.md) +- [TiDB 5.0.0 Release Notes](/releases/release-5.0.0.md) +- [TiDB 6.1.1 Release Notes](/releases/release-6.1.1.md) +- [Use Stale Read](/develop/dev-guide-use-stale-read.md) +- [Timeouts in TiDB](/develop/dev-guide-timeouts-in-tidb.md) + +### tidb_gc_run_interval + +Referenced in: +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [GC Configuration](/garbage-collection-configuration.md) +- [TiDB 5.0.0 Release Notes](/releases/release-5.0.0.md) + +### tidb_gc_scan_lock_mode + +Referenced in: +- [GC Overview](/garbage-collection-overview.md) +- [Basic Features](/basic-features.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [GC Configuration](/garbage-collection-configuration.md) +- [TiDB 5.0.4 Release Notes](/releases/release-5.0.4.md) +- [TiDB 5.0.0 Release Notes](/releases/release-5.0.0.md) + +### tidb_general_log + +Referenced in: +- [TiDB Data Migration FAQs](/dm/dm-faq.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB Command-Line Flags](/command-line-flags-for-tidb-configuration.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [TiDB Configuration File](/tidb-configuration-file.md) +- [TiDB 8.0.0 Release Notes](/releases/release-8.0.0.md) + +### tidb_hash_exchange_with_new_collation + +Referenced in: +- No direct references found + +### tidb_hash_join_concurrency + +Referenced in: +- [Three Nodes Hybrid Deployment](/best-practices/three-nodes-hybrid-deployment.md) +- [Analyze Slow Queries](/analyze-slow-queries.md) +- [Explain Joins](/explain-joins.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB TPC-H Performance Test Report -- v4.0 vs v3.0](/benchmark/v4.0-performance-benchmarking-with-tpch.md) + +### tidb_hashagg_final_concurrency + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB v5.1 TPC-C Performance Test Report](/benchmark/v5.1-performance-benchmarking-with-tpcc.md) +- [TiDB Sysbench Performance Test Report - v6.1.0 vs. v6.0.0](/benchmark/benchmark-sysbench-v6.1.0-vs-v6.0.0.md) +- [TiDB Sysbench Performance Test Report - v5.0 vs. v4.0](/benchmark/benchmark-sysbench-v5-vs-v4.md) +- [TiDB TPC-H Performance Test Report -- v4.0 vs v3.0](/benchmark/v4.0-performance-benchmarking-with-tpch.md) +- [TiDB TPC-C Performance Test Report -- v4.0 vs v3.0](/benchmark/v4.0-performance-benchmarking-with-tpcc.md) +- [TiDB v5.0 TPC-C Performance Test Report](/benchmark/v5.0-performance-benchmarking-with-tpcc.md) + +### tidb_hashagg_partial_concurrency + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB v5.1 TPC-C Performance Test Report](/benchmark/v5.1-performance-benchmarking-with-tpcc.md) +- [TiDB Sysbench Performance Test Report - v6.1.0 vs. v6.0.0](/benchmark/benchmark-sysbench-v6.1.0-vs-v6.0.0.md) +- [TiDB Sysbench Performance Test Report - v5.0 vs. v4.0](/benchmark/benchmark-sysbench-v5-vs-v4.md) +- [TiDB TPC-H Performance Test Report -- v4.0 vs v3.0](/benchmark/v4.0-performance-benchmarking-with-tpch.md) +- [TiDB TPC-C Performance Test Report -- v4.0 vs v3.0](/benchmark/v4.0-performance-benchmarking-with-tpcc.md) +- [TiDB v5.0 TPC-C Performance Test Report](/benchmark/v5.0-performance-benchmarking-with-tpcc.md) + +### tidb_host_lookup_max_retries + +Referenced in: +- No direct references found + +### tidb_ignore_prepared_cache_close_stmt + +Referenced in: +- [TiDB Performance Tuning Methods](/tidb-performance-tuning-config.md) +- [Prepared Plan Cache](/sql-prepared-plan-cache.md) +- [Performance Tuning Best Practices](/performance-tuning-practices.md) +- [Performance Tuning Methods](/performance-tuning-methods.md) +- [TiDB 6.0.0-DMR Release Notes](/releases/release-6.0.0-dmr.md) + +### tidb_ignore_index_hint + +Referenced in: +- No direct references found + +### tidb_index_join_batch_size + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [Explain Joins](/explain-joins.md) + +### tidb_index_lookup_concurrency + +Referenced in: +- [TiDB Best Practices](/best-practices/tidb-best-practices.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB TPC-H Performance Test Report -- v4.0 vs v3.0](/benchmark/v4.0-performance-benchmarking-with-tpch.md) + +### tidb_index_lookup_join_concurrency + +Referenced in: +- [Three Nodes Hybrid Deployment](/best-practices/three-nodes-hybrid-deployment.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [Explain Joins](/explain-joins.md) +- [TiDB TPC-H Performance Test Report -- v4.0 vs v3.0](/benchmark/v4.0-performance-benchmarking-with-tpch.md) + +### tidb_index_lookup_size + +Referenced in: +- [TiDB Best Practices](/best-practices/tidb-best-practices.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) + +### tidb_index_serial_scan_concurrency + +Referenced in: +- [TiDB Best Practices](/best-practices/tidb-best-practices.md) +- [Troubleshoot Out of Memory Errors](/troubleshoot-tidb-oom.md) +- [Statistics in TiDB](/statistics.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB Cloud v6.5 TPC-C Performance Test Report](/tidb-cloud/v6.5-performance-benchmarking-with-tpcc.md) +- [TiDB Cloud v7.1 TPC-C Performance Test Report](/tidb-cloud/v7.1-performance-benchmarking-with-tpcc.md) +- [TiDB Cloud v7.5 TPC-C Performance Test Report](/tidb-cloud/v7.5-performance-benchmarking-with-tpcc.md) +- [TiDB Cloud v8.1 TPC-C Performance Test Report](/tidb-cloud/v8.1-performance-benchmarking-with-tpcc.md) + +### tidb_init_chunk_size + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [Transaction Isolation Levels](/transaction-isolation-levels.md) +- [TiDB 3.0 Beta Release Notes](/releases/release-3.0-beta.md) + +### tidb_isolation_read_engines + +Referenced in: +- [TiUP Bench Reference](/tiup/tiup-bench.md) +- [Use TiDB to Read TiFlash](/tiflash/use-tidb-to-read-tiflash.md) +- [Use FastScan](/tiflash/use-fastscan.md) +- [TiFlash Compatibility](/tiflash/tiflash-compatibility.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [Use HTAP Cluster](/tidb-cloud/use-htap-cluster.md) +- [TiDB 4.0.2 Release Notes](/releases/release-4.0.2.md) +- [TiDB v5.4 TPC-H Performance Test Report](/benchmark/v5.4-performance-benchmarking-with-tpch.md) +- [TiDB TPC-H Performance Test Report -- v4.0 vs v3.0](/benchmark/v4.0-performance-benchmarking-with-tpch.md) + +### tidb_last_txn_info + +Referenced in: +- No direct references found + +### tidb_max_auto_analyze_time + +Referenced in: +- [Statistics in TiDB](/statistics.md) +- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md) + +### tidb_max_chunk_size + +Referenced in: +- [TiDB Performance Tuning Methods](/tidb-performance-tuning-config.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [Transaction Isolation Levels](/transaction-isolation-levels.md) +- [TiDB 2.0.9 Release Notes](/releases/release-2.0.9.md) +- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.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 7.5.1 Release Notes](/releases/release-7.5.1.md) + +### tidb_max_delta_schema_count + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [SQL FAQs](/faq/sql-faq.md) +- [TiDB 2.1.18 Release Notes](/releases/release-2.1.18.md) +- [TiDB 3.0.5 Release Notes](/releases/release-3.0.5.md) + +### tidb_max_disk_usage + +Referenced in: +- No direct references found + +### tidb_max_disk_quota + +Referenced in: +- No direct references found + +### tidb_max_txn_ttl + +Referenced in: +- No direct references found + +### tidb_mem_oom_action + +Referenced in: +- [Configure Memory Usage](/configure-memory-usage.md) +- [Non-transactional DML](/non-transactional-dml.md) +- [TiDB Cloud Release Notes - 2022](/tidb-cloud/release-notes-2022.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 8.1.0 Release Notes](/releases/release-8.1.0.md) + +### tidb_mem_quota_analyze + +Referenced in: +- [Troubleshoot Out of Memory Errors](/troubleshoot-tidb-oom.md) +- [Statistics in TiDB](/statistics.md) +- [TiDB 7.1.6 Release Notes](/releases/release-7.1.6.md) +- [TiDB 7.5.2 Release Notes](/releases/release-7.5.2.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 8.1.0 Release Notes](/releases/release-8.1.0.md) + +### tidb_mem_quota_apply_cache + +Referenced in: +- No direct references found + +### tidb_mem_quota_binding_cache + +Referenced in: +- [SQL Plan Management](/sql-plan-management.md) +- [TiDB 6.0.0-DMR Release Notes](/releases/release-6.0.0-dmr.md) + +### tidb_mem_quota_indexlookupjoin + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 6.0.0-DMR Release Notes](/releases/release-6.0.0-dmr.md) + +### tidb_mem_quota_nestedloopapply + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) + +### tidb_mem_quota_query + +Referenced in: +- [Enable Disk Spill Encryption](/enable-disk-spill-encrypt.md) +- [Troubleshoot Out of Memory Errors](/troubleshoot-tidb-oom.md) +- [TiDB Troubleshooting Map](/tidb-troubleshooting-map.md) +- [Error Codes and Troubleshooting](/error-codes.md) +- [Contribute to TiDB Documentation](/CONTRIBUTING.md) +- [TiFlash Results Materialization](/tiflash/tiflash-results-materialization.md) +- [Identify Slow Queries](/identify-expensive-queries.md) +- [Explain Joins](/explain-joins.md) +- [Configure Memory Usage](/configure-memory-usage.md) +- [Non-transactional DML](/non-transactional-dml.md) +- [Optimizer Hints](/optimizer-hints.md) +- [TiDB Cloud Release Notes - 2022](/tidb-cloud/release-notes-2022.md) +- [TiDB Configuration File](/tidb-configuration-file.md) +- [TiDB 4.0.10 Release Notes](/releases/release-4.0.10.md) +- [TiDB 7.1.6 Release Notes](/releases/release-7.1.6.md) +- [TiDB 6.0.0-DMR Release Notes](/releases/release-6.0.0-dmr.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 8.1.2 Release Notes](/releases/release-8.1.2.md) +- [TiDB 7.6.0 Release Notes](/releases/release-7.6.0.md) +- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md) +- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md) +- [TiDB 6.5.4 Release Notes](/releases/release-6.5.4.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 7.3.0 Release Notes](/releases/release-7.3.0.md) +- [TiDB 6.5.11 Release Notes](/releases/release-6.5.11.md) +- [TiDB 7.5.4 Release Notes](/releases/release-7.5.4.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_mem_quota_sort + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 6.0.0-DMR Release Notes](/releases/release-6.0.0-dmr.md) + +### tidb_merge_join_concurrency + +Referenced in: +- [System Variables](/system-variables.md) + +### tidb_merge_partition_stats_concurrency + +Referenced in: +- [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: +- [Monitoring API](/metrics-schema.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) + +### tidb_metric_query_step + +Referenced in: +- [Monitoring API](/metrics-schema.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) + +### tidb_multi_statement_mode + +Referenced in: +- [Error Codes and Troubleshooting](/error-codes.md) +- [TiDB 5.1.1 Release Notes](/releases/release-5.1.1.md) +- [TiDB 7.1.4 Release Notes](/releases/release-7.1.4.md) +- [TiDB 5.2.0 Release Notes](/releases/release-5.2.0.md) +- [Integrate TiDB Cloud with n8n](/tidb-cloud/integrate-tidbcloud-with-n8n.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 6.5.8 Release Notes](/releases/release-6.5.8.md) +- [TiDB 7.5.1 Release Notes](/releases/release-7.5.1.md) + +### tidb_nontransactional_ignore_error + +Referenced in: +- [Non-transactional DML](/non-transactional-dml.md) +- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md) + +### tidb_opt_agg_push_down + +Referenced in: +- [TiDB Performance Tuning Methods](/tidb-performance-tuning-config.md) +- [Tune TiFlash Performance](/tiflash/tune-tiflash-performance.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 5.4.2 Release Notes](/releases/release-5.4.2.md) +- [TiDB 6.1.7 Release Notes](/releases/release-6.1.7.md) +- [TiDB 5.1.5 Release Notes](/releases/release-5.1.5.md) +- [TiDB 6.5.4 Release Notes](/releases/release-6.5.4.md) +- [TiDB 7.1.1 Release Notes](/releases/release-7.1.1.md) +- [TiDB 4.0 GA Release Notes](/releases/release-4.0-ga.md) +- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md) +- [TiDB 7.3.0 Release Notes](/releases/release-7.3.0.md) + +### tidb_opt_broadcast_cartesian_join + +Referenced in: +- No direct references found + +### tidb_opt_concurrency_factor + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) + +### tidb_opt_correlation_exp_factor + +Referenced in: +- [Extended Statistics](/extended-statistics.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 3.0.0-rc.1 Release Notes](/releases/release-3.0.0-rc.1.md) + +### tidb_opt_correlation_threshold + +Referenced in: +- [Extended Statistics](/extended-statistics.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) + +### tidb_opt_desc_factor + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) + +### tidb_opt_distinct_agg_push_down + +Referenced in: +- [TiDB Performance Tuning Methods](/tidb-performance-tuning-config.md) +- [Tune TiFlash Performance](/tiflash/tune-tiflash-performance.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [Distinct Optimization](/agg-distinct-optimization.md) +- [TiDB Configuration File](/tidb-configuration-file.md) +- [TiDB TPC-H Performance Test Report -- v4.0 vs v3.0](/benchmark/v4.0-performance-benchmarking-with-tpch.md) + +### tidb_opt_enable_correlation_adjustment + +Referenced in: +- [TiDB 5.2.0 Release Notes](/releases/release-5.2.0.md) + +### tidb_opt_insubq_to_join_and_agg + +Referenced in: +- [Subquery Optimization](/subquery-optimization.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [Optimizer Hints](/optimizer-hints.md) +- [TiDB 3.0 Beta Release Notes](/releases/release-3.0-beta.md) + +### tidb_opt_join_reorder_threshold + +Referenced in: +- [Join Reorder](/join-reorder.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 3.0.0-rc.1 Release Notes](/releases/release-3.0.0-rc.1.md) +- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md) + +### tidb_opt_limit_push_down_threshold + +Referenced in: +- [TiDB 5.2.0 Release Notes](/releases/release-5.2.0.md) + +### tidb_opt_memory_factor + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) + +### tidb_opt_network_factor + +Referenced in: +- [Choose Indexes](/choose-index.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) + +### tidb_opt_objective + +Referenced in: +- [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_prefix_index_single_scan + +Referenced in: +- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md) + +### tidb_opt_range_max_size + +Referenced in: +- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md) + +### tidb_opt_scan_factor + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) + +### tidb_opt_seek_factor + +Referenced in: +- [Choose Indexes](/choose-index.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) + +### tidb_opt_skew_distinct_agg + +Referenced in: +- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md) + +### tidb_opt_tiflash_concurrency_factor + +Referenced in: +- No direct references found + +### tidb_opt_write_row_id + +Referenced in: +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 2.1 RC5 Release Notes](/releases/release-2.1-rc.5.md) + +### tidb_optimizer_selectivity_level + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) + +### tidb_partition_prune_mode + +Referenced in: +- [Prepared Plan Cache](/sql-prepared-plan-cache.md) +- [Partitioned Table](/partitioned-table.md) +- [Use MPP Mode](/tiflash/use-tiflash-mpp-mode.md) +- [TiDB 8.1.0 Release Notes](/releases/release-8.1.0.md) +- [TiDB 5.1.0 Release Notes](/releases/release-5.1.0.md) +- [TiDB 8.5.0 Release Notes](/releases/release-8.5.0.md) +- [TiDB 6.3.0 Release Notes](/releases/release-6.3.0.md) +- [TiFlash Upgrade Guide](/tiflash-upgrade-guide.md) + +### tidb_pprof_sql_cpu + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [TiDB 3.0.10 Release Notes](/releases/release-3.0.10.md) + +### tidb_prepared_plan_cache_memory_guard_ratio + +Referenced in: +- [Prepared Plan Cache](/sql-prepared-plan-cache.md) +- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md) + +### tidb_prepared_plan_cache_size + +Referenced in: +- [TiDB Cloud Release Notes - 2022](/tidb-cloud/release-notes-2022.md) +- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md) +- [TiDB 6.4.0 Release Notes](/releases/release-6.4.0.md) +- [TiDB 7.1.0 Release Notes](/releases/release-7.1.0.md) +- [TiDB v6.2 TPC-C Performance Test Report](/benchmark/v6.2-performance-benchmarking-with-tpcc.md) +- [TiDB v6.1 TPC-C Performance Test Report](/benchmark/v6.1-performance-benchmarking-with-tpcc.md) +- [TiDB Sysbench Performance Test Report - v6.1.0 vs. v6.0.0](/benchmark/benchmark-sysbench-v6.1.0-vs-v6.0.0.md) +- [TiDB Sysbench Performance Test Report - v6.2.0 vs. v6.1.0](/benchmark/benchmark-sysbench-v6.2.0-vs-v6.1.0.md) + +### tidb_projection_concurrency + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 5.0.0 Release Notes](/releases/release-5.0.0.md) +- [TiDB TPC-H Performance Test Report -- v4.0 vs v3.0](/benchmark/v4.0-performance-benchmarking-with-tpch.md) + +### tidb_query_log_max_len + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [Identify Slow Queries](/identify-slow-queries.md) +- [TiDB Cloud Release Notes - 2022](/tidb-cloud/release-notes-2022.md) +- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md) +- [TiDB 2.1 RC5 Release Notes](/releases/release-2.1-rc.5.md) +- [TiDB 2.1 GA Release Notes](/releases/release-2.1-ga.md) + +### tidb_read_staleness + +Referenced in: +- [Stale Read](/stale-read.md) +- [Read Historical Data Using tidb_read_staleness](/tidb-read-staleness.md) +- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md) +- [Use Stale Read](/develop/dev-guide-use-stale-read.md) +- [TiDB 5.4.0 Release Notes](/releases/release-5.4.0.md) + +### tidb_replica_read + +Referenced in: +- [Best Practices for TiDB Read-Only Nodes Deployment](/best-practices/readonly-nodes.md) +- [Three Data Centers Deployment Solution with Local Read](/best-practices/three-dc-local-read.md) +- [Best Practices for TiDB on Public Cloud Platforms](/best-practices-on-public-cloud.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [Follower Read](/follower-read.md) +- [Optimizer Hints](/optimizer-hints.md) +- [Use Follower Read to Ensure Strongly Consistent Reads](/develop/dev-guide-use-follower-read.md) +- [TiDB 3.1.0-beta.2 Release Notes](/releases/release-3.1.0-beta.2.md) +- [TiDB 4.0.2 Release Notes](/releases/release-4.0.2.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 7.0.0 Release Notes](/releases/release-7.0.0.md) +- [TiDB 6.0.0-DMR Release Notes](/releases/release-6.0.0-dmr.md) +- [TiDB 6.6.0 Release Notes](/releases/release-6.6.0.md) +- [TiDB 5.4.0 Release Notes](/releases/release-5.4.0.md) + +### tidb_retry_limit + +Referenced in: +- [Troubleshoot Lock Conflicts](/troubleshoot-lock-conflicts.md) +- [TiDB Optimistic Transaction Model](/optimistic-transaction.md) +- [TiDB Transaction Overview](/transaction-overview.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB Pessimistic Transaction Mode](/pessimistic-transaction.md) +- [TiDB 2.1 GA Release Notes](/releases/release-2.1-ga.md) +- [TiDB 2.1 Beta Release Notes](/releases/release-2.1-beta.md) + +### tidb_row_format_version + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 3.0.0-rc.1 Release Notes](/releases/release-3.0.0-rc.1.md) + +### tidb_scatter_region + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 2.1 RC5 Release Notes](/releases/release-2.1-rc.5.md) + +### tidb_schema_cache_size + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md) + +### tidb_session_alias + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md) + +### tidb_skip_ascii_check + +Referenced in: +- [Character Set and Collation](/character-set-and-collation.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB Configuration File](/tidb-configuration-file.md) + +### tidb_skip_isolation_level_check + +Referenced in: +- [Transaction Isolation Levels](/transaction-isolation-levels.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 3.0.0-rc.1 Release Notes](/releases/release-3.0.0-rc.1.md) + +### tidb_skip_utf8_check + +Referenced in: +- [Character Set and Collation](/character-set-and-collation.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB Configuration File](/tidb-configuration-file.md) +- [TiDB 2.1 RC5 Release Notes](/releases/release-2.1-rc.5.md) + +### tidb_slow_log_threshold + +Referenced in: +- [Slow Query Page](/dashboard/dashboard-slow-query.md) +- [Identify Slow Queries](/identify-slow-queries.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB Configuration File](/tidb-configuration-file.md) +- [TiDB 3.0.0-rc.1 Release Notes](/releases/release-3.0.0-rc.1.md) + +### tidb_slow_query_file + +Referenced in: +- [Identify Slow Queries](/identify-slow-queries.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB Configuration File](/tidb-configuration-file.md) + +### tidb_snapshot + +Referenced in: +- [Read Historical Data](/read-historical-data.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [Stale Read](/stale-read.md) +- [Use Stale Read](/develop/dev-guide-use-stale-read.md) +- [TiDB 2.1 RC5 Release Notes](/releases/release-2.1-rc.5.md) + +### tidb_stmt_summary_history_size + +Referenced in: +- [Statement Summary Tables](/statement-summary-tables.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 4.0.0-rc.2 Release Notes](/releases/release-4.0.0-rc.2.md) + +### tidb_stmt_summary_internal_query + +Referenced in: +- [Statement Summary Tables](/statement-summary-tables.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 4.0.0-rc.2 Release Notes](/releases/release-4.0.0-rc.2.md) + +### tidb_stmt_summary_max_sql_length + +Referenced in: +- [Statement Summary Tables](/statement-summary-tables.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 4.0.0-rc.2 Release Notes](/releases/release-4.0.0-rc.2.md) + +### tidb_stmt_summary_max_stmt_count + +Referenced in: +- [Statement Summary Tables](/statement-summary-tables.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 4.0.0-rc.2 Release Notes](/releases/release-4.0.0-rc.2.md) + +### tidb_stmt_summary_refresh_interval + +Referenced in: +- [Statement Summary Tables](/statement-summary-tables.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 4.0.0-rc.2 Release Notes](/releases/release-4.0.0-rc.2.md) + +### tidb_store_limit + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB Configuration File](/tidb-configuration-file.md) +- [TiDB 3.0.0-rc.1 Release Notes](/releases/release-3.0.0-rc.1.md) + +### tidb_tbl_cache_size + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md) + +### tidb_tmp_table_max_size + +Referenced in: +- [Temporary Tables](/temporary-tables.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 6.1.0 Release Notes](/releases/release-6.1.0.md) + +### tidb_top_sql_max_meta_count + +Referenced in: +- [Top SQL](/dashboard/top-sql.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 5.4.0 Release Notes](/releases/release-5.4.0.md) + +### tidb_top_sql_max_time_series_count + +Referenced in: +- [Top SQL](/dashboard/top-sql.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 5.4.0 Release Notes](/releases/release-5.4.0.md) + +### tidb_txn_mode + +Referenced in: +- [TiDB Transaction Overview](/transaction-overview.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB Pessimistic Transaction Mode](/pessimistic-transaction.md) +- [TiDB 3.0.8 Release Notes](/releases/release-3.0.8.md) + +### tidb_use_plan_baselines + +Referenced in: +- [SQL Plan Management](/sql-plan-management.md) +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 4.0.0-rc.1 Release Notes](/releases/release-4.0.0-rc.1.md) + +### tidb_wait_split_region_finish + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 2.1 RC5 Release Notes](/releases/release-2.1-rc.5.md) + +### tidb_wait_split_region_timeout + +Referenced in: +- [SHOW VARIABLES | TiDB SQL Statement Reference](/sql-statements/sql-statement-show-variables.md) +- [TiDB 2.1 RC5 Release Notes](/releases/release-2.1-rc.5.md) + +### tidb_window_concurrency + +Referenced in: +- [SHOW VARIABLES](/sql-statements/sql-statement-show-variables.md) + +### tidb_window_pipelined_threshold + +Referenced in: +- No direct references found + +### tidb_window_pipelined_threshold_size + +Referenced in: +- No direct references found + +### tidb_window_size + +Referenced in: +- No direct references found + +### tiflash_fastscan + +Referenced in: +- [Use FastScan to Accelerate TiFlash Queries](/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: +- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md) + +### tiflash_fine_grained_shuffle_stream_count + +Referenced in: +- [Tune TiFlash Performance](/tiflash/tune-tiflash-performance.md) +- [TiDB 6.2.0 Release Notes](/releases/release-6.2.0.md) + +### tiflash_mem_quota_query_per_node + +Referenced in: +- [TiFlash Disk Spill](/tiflash/tiflash-spill-disk.md) +- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md) + +### tiflash_query_spill_ratio + +Referenced in: +- [TiFlash Disk Spill](/tiflash/tiflash-spill-disk.md) +- [TiDB 7.4.0 Release Notes](/releases/release-7.4.0.md) + +### tiflash_replica_read + +Referenced in: +- [Basic Features](/basic-features.md) +- [Create TiFlash Replicas](/tiflash/create-tiflash-replicas.md) +- [TiDB 7.3.0 Release Notes](/releases/release-7.3.0.md) + +### tiflash_hashagg_preaggregation_mode + +Referenced in: +- [TiDB 8.3.0 Release Notes](/releases/release-8.3.0.md) + +### tikv_client_read_timeout + +Referenced in: +- [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 VARIABLES](/sql-statements/sql-statement-show-variables.md) +- [Prepared Plan Cache](/sql-prepared-plan-cache.md) +- [Configure Time Zone](/configure-time-zone.md) +- [TiDB 6.0.0-DMR Release Notes](/releases/release-6.0.0-dmr.md) +- [TiDB 2.1.8 Release Notes](/releases/release-2.1.8.md) +- [TiDB 3.0.8 Release Notes](/releases/release-3.0.8.md) + +### timestamp + +Referenced in: +- [Log Redaction](/log-redaction.md) +- [Time Service Overview](/tso.md) +- [Analyze Slow Queries](/analyze-slow-queries.md) +- [TiDB Optimistic Transaction Model](/optimistic-transaction.md) +- [Time To Live (TTL)](/time-to-live.md) +- [Dumpling Overview](/dumpling-overview.md) +- [Partitioned Table](/partitioned-table.md) +- [Back up and Restore a Snapshot of TiDB Cluster Data](/br/br-snapshot-manual.md) +- [Point-in-Time Recovery](/br/br-pitr-manual.md) +- [Back up and Restore Incremental Data](/br/br-incremental-guide.md) + +### transaction_isolation + +Referenced in: +- [SET TRANSACTION](/sql-statements/sql-statement-set-transaction.md) +- [Third-Party Tool Compatibility](/develop/dev-guide-third-party-tools-compatibility.md) +- [TiDB 6.0.0-DMR Release Notes](/releases/release-6.0.0-dmr.md) + +### tx_isolation + +Referenced in: +- [Performance Tuning Package](/performance-tuning-practices.md) + +### txn_scope + +Referenced in: +- [Resource Control](/tidb-resource-control.md) +- [TiDB Configuration File](/tidb-configuration-file.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) + +### validate_password.check_user_name + +Referenced in: +- [TiDB Password Management](/password-management.md) +- [Encryption and Compression Functions](/functions-and-operators/encryption-and-compression-functions.md) +- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md) + +### validate_password.dictionary + +Referenced in: +- [TiDB Password Management](/password-management.md) +- [Encryption and Compression Functions](/functions-and-operators/encryption-and-compression-functions.md) +- [Security Compatibility with MySQL](/security-compatibility-with-mysql.md) +- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md) + +### validate_password.enable + +Referenced in: +- [TiDB Password Management](/password-management.md) +- [Encryption and Compression Functions](/functions-and-operators/encryption-and-compression-functions.md) +- [Security Compatibility with MySQL](/security-compatibility-with-mysql.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md) + +### validate_password.length + +Referenced in: +- [TiDB Password Management](/password-management.md) +- [Encryption and Compression Functions](/functions-and-operators/encryption-and-compression-functions.md) +- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) + +### validate_password.mixed_case_count + +Referenced in: +- [TiDB Password Management](/password-management.md) +- [Encryption and Compression Functions](/functions-and-operators/encryption-and-compression-functions.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md) + +### validate_password.number_count + +Referenced in: +- [TiDB Password Management](/password-management.md) +- [Encryption and Compression Functions](/functions-and-operators/encryption-and-compression-functions.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md) + +### validate_password.policy + +Referenced in: +- [TiDB Password Management](/password-management.md) +- [Encryption and Compression Functions](/functions-and-operators/encryption-and-compression-functions.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md) + +### validate_password.special_char_count + +Referenced in: +- [TiDB Password Management](/password-management.md) +- [Encryption and Compression Functions](/functions-and-operators/encryption-and-compression-functions.md) +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md) +- [TiDB 6.5.0 Release Notes](/releases/release-6.5.0.md) + +### version + +Referenced in: +- [TiDB Tools User Guide](/ecosystem-tool-user-guide.md) +- [Troubleshoot Out of Memory Errors](/troubleshoot-tidb-oom.md) +- [Upgrade Monitoring Services](/upgrade-monitoring-services.md) +- [Foreign Key](/foreign-key.md) + +### version_compile_machine + +Referenced in: +- No direct references found + +### version_compile_os + +Referenced in: +- No direct references found + +### wait_timeout + +Referenced in: +- [Best Practices for Java Applications](/best-practices/java-app-best-practices.md): Discusses setting wait_timeout for Java applications +- [Troubleshoot Lock Conflicts](/troubleshoot-lock-conflicts.md): Mentions wait_timeout in context of lock wait timeouts +- [Troubleshoot Out of Memory Errors](/troubleshoot-tidb-oom.md): Suggests adjusting wait_timeout for connection pools +- [TiDB Cluster Management FAQs](/faq/manage-cluster-faq.md): Lists wait_timeout as a supported timeout +- [Connection Pools and Connection Parameters](/develop/dev-guide-connection-parameters.md): Details about wait_timeout configuration +- [Limited SQL Features in TiDB Cloud](/tidb-cloud/limited-sql-features.md): Notes read-only status in TiDB Cloud +- [Timeouts in TiDB](/develop/dev-guide-timeouts-in-tidb.md): Explains wait_timeout usage +- [TiDB 3.0 GA Release Notes](/releases/release-3.0-ga.md): Added wait_timeout system variable +- [TiDB 3.0 Beta Release Notes](/releases/release-3.0-beta.md): Added support for wait_timeout +- [TiProxy Overview](/tiproxy/tiproxy-overview.md): Describes connection handling with wait_timeout + +### warning_count + +Referenced in: +- [TiDB 2.1 RC1 Release Notes](/releases/release-2.1-rc.1.md): Added support for warning_count session variable + +### windowing_use_high_precision + +Referenced in: +- [Window Functions](/functions-and-operators/window-functions.md): Describes using windowing_use_high_precision to control precision mode +