mysql添加索引的语句
时间: 2023-11-29 08:47:38 浏览: 82
以下是MySQL添加索引的语句示例:
1. 添加PRIMARY KEY(主键索引)
```mysql
ALTER TABLE `table_name` ADD PRIMARY KEY ( `column` );
```
2. 添加UNIQUE(唯一索引)
```mysql
ALTER TABLE `table_name` ADD UNIQUE ( `column` );```
3. 添加INDEX(普通索引)
```mysql
ALTER TABLE `table_name` ADD INDEX index_name ( `column` );
```
4. 添加FULLTEXT(全文索引)
```mysql
ALTER TABLE `table_name` ADD FULLTEXT ( `column` );
```
5. 添加多列索引
```mysql
ALTER TABLE `table_name` ADD INDEX index_name ( `column1`, `column2` );
```
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