Question

I’m trying to select a value which corresponds to the lowest number in another column, and then use it to SET in another table.

But it’s telling me “group function is not allowed here”

is there any other way to accomplish this?

UPDATE team 
SET OWNERID = (SELECT USERID
         FROM teamuser
         WHERE MIN(CREATETIME) 
         AND teamId = 5) 
WHERE teamId = 5

(Both team and teamuser tables have a column teamId).

Answer 1

you should do

UPDATE team 
SET OWNERID = (SELECT USERID
         FROM TEAMUSER 
         WHERE CREATETIME = (select min(CREATETIME) from TEAMUSER)
         AND teamId = 5
)
WHERE teamId = 5

You can’t use agreggate functions in where clause, only you can use it on selects, or in Having clause, after group by