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When MySQL queries, create a new column and assign values according to conditions

開発 2023-07-28 21:12:59 訪問数: null

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転載: blog.csdn.net/weixin_43697614/article/details/124219209

When MySQL queries, create a new column and assign values according to conditions

When MySQL queries, create a new column and assign values according to conditions

When MySQL queries, create a new column and assign values according to conditions

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