DROP STATS

DROP STATS 语句用于从当前所选定的数据库中删除选定表的统计信息。

语法图

DropStatsStmt
DROPSTATSTableNameList
TableNameList
TableName,
TableName
Identifier.Identifier

示例

CREATE TABLE t(a INT);
Query OK, 0 rows affected (0.01 sec)
SHOW STATS_META WHERE db_name='test' and table_name='t';
+---------+------------+----------------+---------------------+--------------+-----------+ | Db_name | Table_name | Partition_name | Update_time | Modify_count | Row_count | +---------+------------+----------------+---------------------+--------------+-----------+ | test | t | | 2020-05-25 20:34:33 | 0 | 0 | +---------+------------+----------------+---------------------+--------------+-----------+ 1 row in set (0.00 sec)
DROP STATS t;
Query OK, 0 rows affected (0.00 sec)
SHOW STATS_META WHERE db_name='test' and table_name='t';
Empty set (0.00 sec)

MySQL 兼容性

该语句是 TiDB 对 MySQL 语法的扩展。

另请参阅

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