SQL Server Query LEFT JOIN, SUM and GROUP BY and I'm stumped!

Question

I am beating my brain against this one

I have 3 SQL Server 2005 tables

userawards:

id, awardamount, userid, dateawarded, aw         


        

Answer 1

You can do it but the way you do it now is that it will show the number of awardamount, or bactually, the sum of awardamount - but per id, user, awardtypeid combination. You need to grab the user and sum of awards by itself, then join up with awardtype id - just be aware that the sum of award amounts is repeated for every awardtypeid

SELECT 
     ??.id ,
     a.userid , 
     a.awardtypeid , 
     ab.awardamount ,
     
FROM 
     (select userid, SUM(awardamount) as awardamount FROM awards GROUP BY userid) AS ab
INNER JOIN awards AS a on ab.userid = a.userid
LEFT JOIN userinfo AS ui  
  ON ui.userid = a.userid
LEFT JOIN awardtypes AS at 
  ON awardtypesid = a.awardtypeid 

By adding up the sum of awardamount per user before you join it in, you should be able to get what you want, without any grouping.