mysql查询结果排序

Posted 2023-03-15

mysql查询数据库表中前20条记录并排序
我的sql是这样写的,但是查出来的结果..
select count(StoreUserPKID),s.StoreUserPKID,s.StoreUserID,sum(v.TimeLength) from tStoreUser as s
inner join tVoucherDetails as v on s.StoreUserPKID=v.VoucherStoreUserPKID where DetailsVoucherAmount>0 and
v.remark='支付宝充值' group by StoreUserPKID order by v.TimeLength limit 0,20;
查出来结果缺没有帮我排序...改成order by sum(v.TimeLength)也不对.

问题在于使用了group by 你这么用是在使用了分组之后，在分组内使用order by

select * from(
select count(StoreUserPKID),s.StoreUserPKID,s.StoreUserID,sum(v.TimeLength) from tStoreUser as s
inner join tVoucherDetails as v on s.StoreUserPKID=v.VoucherStoreUserPKID where DetailsVoucherAmount>0 and
v.remark='支付宝充值' group by StoreUserPKID )
order by v.TimeLength limit 0,20;

这样试试 参考技术A 你的S没有定义是按照哪个字段排序