MERGER INTO语法

岁月不饶人老不正经

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2022-04-29

在这里插入图片描述
如图 当红色条件成立时执行 蓝色update 语句（when matched then）内容
当红色条件不成立时执行绿色insert语句（wehn not matched then）内容

注：修改语句中不可修改用于条件对比的字段

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