SQL query causing error due to group by statement (INVALID COLUMNS) - sql

Question

I have following SQL:
DECLARE #EmpId AS Varchar(20),
#CompanyId as VARCHAR(20),
#DepartmentId AS VARCHAR(20),
#DesignationId AS VARCHAR(20),
#GradeId AS VARCHAR(20),
#FromDate AS DATE,
#TillDate AS DATE
SET #EmpId = null
SET #CompanyId = NULL
SET #DepartmentId = NULL
SET #DesignationId = NULL
SET #GradeId = NULL
SET #FromDate = '1-1-2015'
SET #TillDate = '1-1-2016'
SELECT
LA.EmpId,AT.IsPaid AS 'IsPaid',
AT.AttendanceTypeCode,
(SELECT DISTINCT IsPaid
FROM LeaveApproval
WHERE empid = LA.EmpId) AS 'testPAID',
SUM(CASE WHEN AT.IsPaid = 1 THEN 1 END) AS Paid,
COUNT(CASE WHEN AT.IsPaid = 0 THEN AT.AttendanceTypeCode END) AS UnPaid,
COUNT(AT.AttendanceTypeCode) AS LeaveCount
FROM
LeaveApproval LA
INNER JOIN
AttendanceTypes AT ON LA.AttendanceTypeId = AT.AttendanceTypeId
INNER JOIN
EmpMaster EM ON LA.Empid = EM.EmpId
WHERE
EM.ActiveInActive <> 1 AND
EM.EmpId = CASE WHEN ISNULL(#EmpId ,'-1') <> '-1' AND #EmpId <> ''
THEN #EmpId
ELSE EM.EmpId
END
AND EM.CompanyId = CASE WHEN ISNULL(#CompanyId ,'-1') <> '-1' AND #CompanyId <> ''
THEN #CompanyId
ELSE EM.CompanyId
END
AND EM.DepartmentId = CASE WHEN ISNULL(#DepartmentId,'-1') <> '-1' AND #DepartmentId<> ''
THEN #DepartmentId
ELSE EM.DepartmentId
END
AND ISNULL(EM.DesignationId, '') = CASE WHEN ISNULL(#DesignationId ,'-1') <> '-1' AND #DesignationId <> '' THEN #DesignationId ELSE ISNULL(EM .DesignationId,'') END
AND ISNULL(EM.GradeId,'') = CASE WHEN ISNULL(#GradeId ,'-1') <> '-1' AND #GradeId <> '' THEN #GradeId ELSE ISNULL(EM .GradeId,'') END
AND FromDate BETWEEN #FromDate AND #TillDate
GROUP BY
LA.EmpID, AT.AttendanceTypeCode, AT.IsPaid, Paid, UnPaid
The above SQL is not working.
I get an error
Column Paid and InPaid are invalid.
What I know is that 'Paid' and Unpaid are from subquery and are NOT available in select list's group by.
My question is how can I achieve the above outcome after running my SQL my outcome should repeat same value which is sum for Paid for each empid
Any help will be appreciated

Answer 1

You cannot use an alias of a column of the current SELECT in its GROUP BY. You have to either do this:
Group By LA.EmpID,AT.AttendanceTypeCode,AT.IsPaid,SUM(CASE WHEN AT.IsPaid=1 Then 1 END), COUNT(CASE WHEN AT.IsPaid=0 Then AT.AttendanceTypeCode END)
Or use all your SELECT as a subquery and group by as you planned in the outer query.

Answer 2

DECLARE #EmpId AS Varchar(20),
#CompanyId as VARCHAR(20),
#DepartmentId AS VARCHAR(20),
#DesignationId AS VARCHAR(20),
#GradeId AS VARCHAR(20),
#FromDate AS DATE,
#TillDate AS DATE
Set #EmpId=null
SET #CompanyId= NULL
SET #DepartmentId=NULL
SET #DesignationId=NULL
SET #GradeId=NULL
SET #FromDate='1-1-2015'
SET #TillDate='1-1-2016';
with LeaveApprovalCTE as
(
Select
AT.IsPaid as 'IsPaid',
AT.AttendanceTypeCode, (select distinct IsPaid from LeaveApproval where empid=LA.EmpId) as 'testPAID',
CASE WHEN AT.IsPaid=1 Then 1 END as Paid,
CASE WHEN AT.IsPaid=0 Then AT.AttendanceTypeCode END as UnPaid,
AT.AttendanceTypeCode AS LeaveCount
From
LeaveApproval LA
INNER JOIN AttendanceTypes AT ON LA.AttendanceTypeId = AT.AttendanceTypeId
INNER JOIN EmpMaster EM ON LA.Empid = EM.EmpId
WHERE
EM.ActiveInActive <> 1 AND
EM.EmpId = CASE WHEN ISNULL(#EmpId ,'-1') <> '-1' AND #EmpId <> '' THEN #EmpId ELSE EM .EmpId END
AND
EM.CompanyId = CASE WHEN ISNULL(#CompanyId ,'-1') <> '-1' AND #CompanyId <> '' THEN #CompanyId ELSE EM .CompanyId END
AND
EM.DepartmentId = CASE WHEN ISNULL(#DepartmentId,'-1') <> '-1' AND #DepartmentId<> '' THEN #DepartmentId ELSE EM .DepartmentId END
AND
ISNULL(EM.DesignationId,'') = CASE WHEN ISNULL(#DesignationId ,'-1') <> '-1' AND #DesignationId <> '' THEN #DesignationId ELSE ISNULL(EM .DesignationId,'') END
AND
ISNULL(EM.GradeId,'') = CASE WHEN ISNULL(#GradeId ,'-1') <> '-1' AND #GradeId <> '' THEN #GradeId ELSE ISNULL(EM .GradeId,'') END
AND
FromDate BETWEEN #FromDate AND #TillDate
)
Select
AttendanceTypeCode,
SUM(Paid) as paid ,
COUNT(UnPaid) as unpaid,
COUNT(LeaveCount) AS LeaveCount
from LeaveApprovalCTE
Group By AttendanceTypeCode,IsPaid,Paid,UnPaid
Use CTE for add new columns in query . Modify your query like this . hope it will work for you