Select not working with Case unless adding field to group by clause

Question

Hi, I have a simple query that I am trying to run.  The first version runs, but I am trying to get the second version to run, because I do not want to have to include PAYRCORD in the Group By.  Since I do not want it grouped by PAYRCORD.
Is there a way to write the second version to work?
---- First Version ---
SELECT     TOP (100) PERCENT YEAR1, EMPLOYID, PAYRCORD,
CASE WHEN (dbo.tw80507.PAYRCORD LIKE '%OT%' AND NOT (dbo.tw80507.PAYRCORD LIKE 'OTHER'))
                      THEN SUM(DISTINCT dbo.tw80507.TwOriginalTaxableWages) ELSE NULL END AS OT,
CASE WHEN dbo.tw80507.PAYRCORD NOT LIKE '%OT%'
                      THEN SUM(DISTINCT dbo.tw80507.TwOriginalTaxableWages) ELSE NULL END AS REG
FROM         dbo.TW80507
GROUP BY YEAR1, EMPLOYID, PYRLRTYP, PAYRCORD
HAVING      (YEAR1 > 2013) AND (PYRLRTYP = 3)
ORDER BY YEAR1
--- Second Version ---
SELECT     TOP (100) PERCENT YEAR1, EMPLOYID,
CASE WHEN (dbo.tw80507.PAYRCORD LIKE '%OT%' AND NOT (dbo.tw80507.PAYRCORD LIKE 'OTHER'))
                      THEN SUM(DISTINCT dbo.tw80507.TwOriginalTaxableWages) ELSE NULL END AS OT,
CASE WHEN dbo.tw80507.PAYRCORD NOT LIKE '%OT%'
                      THEN SUM(DISTINCT dbo.tw80507.TwOriginalTaxableWages) ELSE NULL END AS REG
FROM         dbo.TW80507
GROUP BY YEAR1, EMPLOYID, PYRLRTYP
HAVING      (YEAR1 > 2013) AND (PYRLRTYP = 3)
ORDER BY YEAR1

Answer 1

Put the CASE inside the SUM.
I also cleaned up your query by removing an excess of prefixes, making the code difficult to read, and I replaced HAVING with WHERE. (You use HAVING WHEN you need to filter on an aggregate value, for instance HAVING COUNT(*) > 2.) Finally, I removed the
DISTINCT from the SUM, because that looked, well, funny.
SELECT  YEAR1, EMPLOYID,
         SUM(CASE WHEN PAYRCORD LIKE '%OT%' AND NOT (PAYRCORD LIKE 'OTHER')
                  THEN TwOriginalTaxableWages)
                  ELSE 0
             END) AS OT,
        SUM(CASE WHEN PAYRCORD NOT LIKE '%OT%'
                 THEN TwOriginalTaxableWages
                 ELSE 0
            END AS) REG
FROM    dbo.TW80507
WHERE   YEAR1 > 2013
   AND  PYRLRTYP = 3
GROUP BY YEAR1, EMPLOYID
ORDER BY YEAR1
Erland Sommarskog, SQL Server MVP, [email protected]