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MYSQL中查讯咋查第一条记录!
查看第一条:SELECTgroup_concat(id ORDER BY `create_time` DESC)FROM`user`GROUP BYuser_codeselect top 1 * from book 不对,因为
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MYSQL中查讯咋查第一条记录!
查看第一条:SELECTgroup_concat(id ORDER BY `create_time` DESC)FROM`user`GROUP BYuser_codeselect top 1 * from book 不对,因为