标签：style color sp strong on bs ef as sql
select 需要的字段用a.xx的形式写 from a表 as a left join b表 as b on a.xx=b.xx left join c表 as c on b.xx=c.xx where 后面就看自己的情况加判断;
mysql左连接多表查询
原文地址：http://www.cnblogs.com/helinfeng/p/4126961.html
