SQL Group by question

Posted on 2013-11-19
Last Modified: 2013-11-19
I have a query for SSRS to detail employee bonuses for the past 3 years.

I achieved the appropriate bonus amounts using case statements, but I want the result in one row for each employee.  Currently, with the attached query, it reports in 3 rows.  If I take the Payroll Date out of the Group by clause, it errors.
Question by:urthrilled
LVL 24

Accepted Solution

chaau earned 500 total points
ID: 39660929
to remove the datepart component from grouping you need to include it inside the aggregate function, like this:
SELECT     PREH.FirstName, PREH.Employee, PREH.udDivision, PREH.LastName, PREH.GLCo, PREH.HrlyRate, 
              sum(case  when (datepart(yyyy,PRDT.PREndDate)=(2012-2)) then PRDT.Amount else 0 end) as TwoPrvYr,
		sum(case  when (datepart(yyyy,PRDT.PREndDate)=(2012-1)) then PRDT.Amount else 0 end) as PrvYr,
		 sum(case  when (datepart(yyyy,PRDT.PREndDate)=(2012)) then PRDT.Amount else 0 end) as Year

                      PREH ON HRRM.HRCo = PREH.PRCo AND HRRM.HRRef = PREH.Employee INNER JOIN
                      HRPC ON PREH.PRCo = HRPC.HRCo AND HRRM.PositionCode = HRPC.PositionCode INNER JOIN
                      HQCO ON PREH.GLCo = HQCO.HQCo LEFT OUTER JOIN
                      PRDT ON PREH.PRCo = PRDT.PRCo AND PREH.PRGroup = PRDT.PRGroup AND PREH.Employee = PRDT.Employee

where  PREH.ActiveYN = 'Y' AND (NOT (PREH.GLCo IN (90, 201))) AND (PRDT.EDLCode = 10) and datepart(yyyy,PRDT.PREndDate) between (2012)-2 and (2012)
GROUP BY PREH.GLCo, PREH.udDivision, PREH.LastName, PREH.FirstName, PREH.HrlyRate, PREH.Employee
ORDER BY PREH.GLCo, PREH.udDivision, PREH.LastName, PREH.Employee

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On a side note, this statement:
 datepart(yyyy,PRDT.PREndDate) between (2012)-2 and (2012)

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is not great in terms of performace, as SQL Server will not be able to construct index. It will be better to compare dates with dates, like this:
PRDT.PREndDate >= '20100101' and PRDT.PREndDate < '20130101'

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(this statement will grab all dates for years 2010, 2011, 2012)

Author Closing Comment

ID: 39661111
Thank you!  I am used to manipulating with Crystal and am just gaining the in depth SQL experience to eloquently create SSRS reports.  I do like them so much better, but old dogs can't always readily see new tricks!

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