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我想从表中复制所有行并将这些行插入到这个表中,也就是说,如果表中有行
column -------- A B
我想获得
column -------- A B A B
这可能是用php(或其他语言)制作的,对吗?但我感兴趣,可以将其作为 1 个查询吗?自己的mysql可以这样吗?
试试这个:
INSERT INTO `table` ( `column` ) SELECT `column` FROM `table`;