SHOW ENGINES
SHOW ENGINES
语句用于列出所有支持的存储引擎,该语法仅提供 MySQL 兼容性。
语法图
- ShowEnginesStmt
- ShowLikeOrWhere
ShowEnginesStmt ::=
"SHOW" "ENGINES" ShowLikeOrWhere?
ShowLikeOrWhere ::=
"LIKE" SimpleExpr
| "WHERE" Expression
示例
SHOW ENGINES;
+--------+---------+------------------------------------------------------------+--------------+------+------------+
| Engine | Support | Comment | Transactions | XA | Savepoints |
+--------+---------+------------------------------------------------------------+--------------+------+------------+
| InnoDB | DEFAULT | Supports transactions, row-level locking, and foreign keys | YES | YES | YES |
+--------+---------+------------------------------------------------------------+--------------+------+------------+
1 row in set (0.00 sec)
MySQL 兼容性
SHOW ENGINES
语句始终只返回 InnoDB 作为其支持的引擎。但 TiDB 内部通常使用 TiKV 作为存储引擎。