mysql 一次创建多个索引
时间: 2023-09-30 21:12:30 浏览: 37
MySQL可以通过使用ALTER TABLE语句一次创建多个索引。例如,如果要为表中的多个列创建索引,可以使用以下语法:
```
ALTER TABLE table_name
ADD INDEX index_name_1 (column_1),
ADD INDEX index_name_2 (column_2),
...
```
其中,table_name是要创建索引的表名,index_name_1、index_name_2等是索引的名称,column_1、column_2等是要创建索引的列名。
这样,通过一次ALTER TABLE语句,可以一次性为多个列创建索引,提高查询效率。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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