mysql 联合索引创建
时间: 2023-08-28 13:16:05 浏览: 59
在MySQL中创建联合索引有多种方法。一种方法是使用sql语句,使用ALTER TABLE语句来添加索引。例如,可以使用以下语句创建一个组合索引:
ALTER TABLE `table_name` ADD INDEX index_name (`column1`,`column2`,`column3`);
其中,table_name是需要建立组合索引的表名,index_name是组合索引的名称,column1, column2, column3是需要创建组合索引的列名。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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- *3* [mysql 创建索引(联合索引)](https://blog.csdn.net/tianhaixinfei/article/details/38685357)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT0_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
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