PolarDB:CHECK TABLE

You can execute the CHECK TABLE statement to check tables. This is suitable for scenarios in which tables may fail to be created by executing DDL statements.

• For a sharded table, the CHECK TABLE statement checks the integrity of the physical table shards. The statement also checks whether the columns and indexes of each physical table shard are consistent.
• For a non-sharded table, the CHECK TABLE statement checks whether the table exists.

Syntax

CHECK TABLE tbl_name         

Examples

CHECK TABLE tddl_mgr_log;
+------------------------+-------+----------+----------+
| TABLE                  | OP    | MSG_TYPE | MSG_TEXT |
+------------------------+-------+----------+----------+
| TDDL5_APP.tddl_mgr_log | check | status   | OK       |
+------------------------+-------+----------+----------+
1 row in set (0.56 sec)
CHECK TABLE tddl_mg;
+-------------------+-------+----------+----------------------------------------+
| TABLE             | OP    | MSG_TYPE | MSG_TEXT                               |
+-------------------+-------+----------+----------------------------------------+
| TDDL5_APP.tddl_mg | check | Error    | Table 'tddl5_00.tddl_mg' doesn't exist |
+-------------------+-------+----------+----------------------------------------+
1 row in set (0.02 sec)