mysql'err 1111无效使用组功能'

Question

我收到错误消息：

此查询的“ [Err] 1111-无效使用组功能”：

SELECT u.date, u.des_channel, u.des_type, 
count(distinct(u.id)), 
sum(if(u.date=bp.date,sum(bp.o_outcome),0), 
sum(if(u.date=bp.date,1,0)) as P_n,
count(distinct(if(u.date=bp.date,bp.user_id,0))) 
FROM mayadata.users u 
left join mayadata.billing_pays bp
on u.id=bp.user_id
WHERE (u.date)=5 and year(u.date)=2011 and truncate(monthtimestampdiff(hour,u.datetime,bp.datetime)/24,0)<7
GROUP BY u.date, u.des_channel, u.des_type

Answer 1

您需要使用HAVING

SELECT u.date, u.des_channel, u.des_type, 
COUNT(DISTINCT(u.id)) 
SUM(if(u.date = bp.date, SUM(bp.o_outcome),0)) SUM(if(u.date = bp.date,1,0)) AS P_n,
COUNT(DISTINCT(if(u.date = bp.date, bp.user_id,0))) 
FROM mayadata.users u 
LEFT JOIN mayadata.billing_pays bp ON u.id = bp.user_id
GROUP BY u.date, u.des_channel, u.des_type
HAVING (u.date) = 5 
AND year(u.date) = 2011 
AND truncate(monthtimestampdiff(hour,u.datetime,bp.datetime)/24,0)<7

Answer 2

该错误是由于在SUM中使用SUM引起的

sum(if(u.date=bp.date,sum(bp.o_outcome),0)

这是非法的