Long time ago I created application which contains database with table for each user and every table has only 1 row. So I have tables like user1, user2, ..., user2800. Now I know it was a terrible idea so I am trying to create one big table for every user. I need to create tableLong time ago I created application which conta
阅读背景：
从更多相同的表创建一个大表
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