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RENAME INDEX

ALTER TABLE .. RENAME INDEX 语句用于对已有索引进行重命名。这在 TiDB 中是即时操作的，仅需更改元数据。

语法图

AlterTableStmt
ALTER IGNORE TABLE TableName RenameIndexSpec ,
RenameIndexSpec
RENAME KEY INDEX Identifier TO Identifier

示例

CREATE TABLE t1 (id INT NOT NULL PRIMARY KEY AUTO_INCREMENT, c1 INT NOT NULL, INDEX col1 (c1));
Query OK, 0 rows affected (0.11 sec)
SHOW CREATE TABLE t1;
*************************** 1. row ***************************
       Table: t1
Create Table: CREATE TABLE `t1` (
  `id` int NOT NULL AUTO_INCREMENT,
  `c1` int NOT NULL,
  PRIMARY KEY (`id`),
  KEY `col1` (`c1`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin
1 row in set (0.00 sec)
ALTER TABLE t1 RENAME INDEX col1 TO c1;
Query OK, 0 rows affected (0.09 sec)
SHOW CREATE TABLE t1;
*************************** 1. row ***************************
       Table: t1
Create Table: CREATE TABLE `t1` (
  `id` int NOT NULL AUTO_INCREMENT,
  `c1` int NOT NULL,
  PRIMARY KEY (`id`),
  KEY `c1` (`c1`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin
1 row in set (0.00 sec)

MySQL 兼容性

RENAME INDEX 语句与 MySQL 完全兼容。如发现任何兼容性差异，请尝试 TiDB 支持资源。

另请参阅