Update 1.1-System-tables.md

matrixorigin · Sep 21, 2023 · 35f5c79 · 35f5c79
1 parent 1056eae
commit 35f5c79
Showing 1 changed file with 13 additions and 1 deletion.
diff --git a/docs/MatrixOne/Reference/1.1-System-tables.md b/docs/MatrixOne/Reference/1.1-System-tables.md
@@ -240,7 +240,7 @@ Start with MatrixOne 0.6 has introduced the concept of multi-account, the defaul
 | options | TEXT(0) | options option information for index |
 | index_table_name | VARCHAR(5000) | The table name of the index table corresponding to the index, currently only the unique index contains the index table |
 
-## mo_sessions view
+### mo_sessions view
 
 | Column            | Type            | comments                            |
 | --------------- | ----------------- | ------------------------------------------------------------ |
@@ -263,6 +263,18 @@ Start with MatrixOne 0.6 has introduced the concept of multi-account, the defaul
 | client_host     | VARCHAR(65535)   | IP address and port of the client.                            |
 | role              | VARCHAR(65535)   | Role name of the user.                                       |
 
+### mo_locks view
+
+| Column            | Type            | comments                            |
+| ------------- | --------------- | ------------------------------------------------ |
+| txn_id        | VARCHAR(65535) | Transaction holding the lock.                  |
+| table_id      | VARCHAR(65535) | The table on which the lock is placed.          |
+| lock_type     | VARCHAR(65535) | Type of lock, which can be `point` or `range`.  |
+| lock_content  | VARCHAR(65535) | Locked content, represented in hexadecimal. For `range` locks, it represents a range; for `point` locks, it represents a single value. |
+| lock_mode     | VARCHAR(65535) | Lock mode, which can be `shared` or `exclusive`.|
+| lock_status   | VARCHAR(65535) | Lock status can be `wait`, `acquired`, or `none`.<br>`wait`: No transaction holds the lock, but transactions are waiting for it.<br>`acquired`: A transaction holds the lock.<br>`none`: No transaction holds the lock, and no transactions await it. |
+| waiting_txns  | VARCHAR(65535) | Transactions waiting on this lock.              |
+
 ## `system_metrics` database
 
 `system_metrics` collect the status and statistics of SQL statements, CPU & memory resource usage.