select * from tbl_user a where(select count(1) as cnt from tbl_order b where a.phone=b.phone)=0
本文共 147 字，大约阅读时间需要 1 分钟。
select * from tbl_user a where(select count(1) as cnt from tbl_order b where a.phone=b.phone)=0
转载于:https://www.cnblogs.com/6min/p/10861969.html