急!在线等!mysql右表引用左表字段值的问题? SQLServer中有这样的语句: SELECT a.col1, b.col1, b.col2 FROM ta a CROSS APPLY ( SELECT tb.col1, tb.col2 FROM tb WHERE tb.col3 = a.col1 )b GROUP BY a.col1; 这样的语句,mysql怎么实现??
------解决方案-------------------- SELECT a.col1, b.col1, b.col2 FROM tb b inner join ta a on b.col3 = a.col1
CROSS APPLY:类似INNER JOIN
------解决方案-------------------- SELECT a.col1, b.col1, b.col2 FROM tb b inner join ta a on b.col3 = a.col1
------解决方案--------------------