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 join 两张表时: select * from A left join B on A.id = B.id (where 条件) union select *
from A right join B on A.id = B.id (where条件);
转载于:https://my.oschina.net/360yg/blog/3011969