改表创建唯一索引语句
时间: 2023-10-12 08:00:46 浏览: 56
答案: 改表创建唯一索引的语句可以使用ALTER TABLE语句来实现。具体语法如下:ALTER TABLE tableName ADD UNIQUE [indexName ON (tableColumns(length));其中,tableName是要修改的表的名称,indexName是索引的名称,tableColumns是要创建索引的列名,length是索引的长度。通过这个语句,我们可以在已经存在的表上创建唯一索引。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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- *1* *3* [mysql建表时创建唯一索引](https://blog.csdn.net/yetaodiao/article/details/127374734)[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^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
- *2* [mysql创建唯一索引](https://blog.csdn.net/m0_67392409/article/details/124005128)[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^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
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