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sql-statement-show-engines.md

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title SHOW ENGINES
summary TiDB 数据库中 SHOW ENGINES 的使用概况。

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 ::=
    "SHOW" "ENGINES" ShowLikeOrWhere?
ShowLikeOrWhere ::=
    "LIKE" SimpleExpr
|   "WHERE" Expression

示例

{{< copyable "sql" >}}

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。