MySQL Full Join的实现 因为MySQL不支持FULL JOIN,下面是替代方法left join + union(可去除重复数据)+ right joinselect * from A left join B on A.id = B.id (where 条件)unionselect * from A right join B on A<a style="color:transparent">本文来源gao($daima.com搞@代@#码$网</a>.id = B.id (where条件);