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:

AlterTableStmt

KeyOrIndex:

KeyOrIndex

示例

  1. CREATE TABLE t1 (id INT NOT NULL PRIMARY KEY AUTO_INCREMENT, c1 INT NOT NULL, INDEX col1 (c1));
  1. Query OK, 0 rows affected (0.11 sec)
  1. SHOW CREATE TABLE t1;
  1. *************************** 1. row ***************************
  2.        Table: t1
  3. Create Table: CREATE TABLE `t1` (
  4.   `id` int(11) NOT NULL AUTO_INCREMENT,
  5.   `c1` int(11) NOT NULL,
  6.   PRIMARY KEY (`id`),
  7.   KEY `col1` (`c1`)
  8. ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin
  9. 1 row in set (0.00 sec)
  1. ALTER TABLE t1 RENAME INDEX col1 TO c1;
  1. Query OK, 0 rows affected (0.09 sec)
  1. SHOW CREATE TABLE t1;
  1. *************************** 1. row ***************************
  2.        Table: t1
  3. Create Table: CREATE TABLE `t1` (
  4.   `id` int(11) NOT NULL AUTO_INCREMENT,
  5.   `c1` int(11) NOT NULL,
  6.   PRIMARY KEY (`id`),
  7.   KEY `c1` (`c1`)
  8. ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin
  9. 1 row in set (0.00 sec)

MySQL 兼容性

RENAME INDEX 语句与 MySQL 完全兼容。如有任何兼容性差异，请在 GitHub 上提交 issue。

另请参阅