How can I use a Select Count in a subquery using sql server 2008

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SQL-Server-2008R2

I'm trying to display the list of employee details (id, code, name, timein, timeOut, NumberOfWorkedDays) from 2 tables "Employee" and "Attendance": I try this query but it gives a wrong message "the subquery returned more than 1 value" (the number of worked days should be in a specific month)

SQL

SELECT  MST_EMPLOYEE.[ID] as ID
      ,[EMPCODE]

      ,[EMPFNAME]+' '+[EMPMNAME]+' '+[EMPLNAME] AS EMPNAME
     ,(SELECT DESIGNATION FROM MST_DESIGNATION WHERE ID=
     (SELECT TOP(1) DESIGNATIONID FROM EMP_PROFESSIONALDETAILS WHERE EMPID=MST_EMPLOYEE.ID ORDER BY HIREDATE DESC)) AS DESIGNATION
    , min(Times_IN) as TimeIn , max(Times_Out) as TimeOut,
    (select count (distinct _Date) from Emp_Attendance  where  month (_date)=6 group by EmpID)


  FROM [MST_EMPLOYEE] inner join Emp_Attendance on Emp_Attendance.EmpID=MST_Employee.ID
 where month(Times_IN) = 6

 group by MST_Employee.ID, MST_Employee.EmpCode, EmpFName, EmpMName, EmpLName

Any solution please ?

Posted 11-Jun-15 0:00am

Member 10286520

Updated 11-Jun-15 0:35am

Herman<T>.Instance

v4

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Herman<T>.Instance 11-Jun-15 6:36am

the GROUP BY EmpID is the problem. You get a full list returned. so...
WHERE MONTH(_date)= 6 AND EmpID = MST_EMPLOYEE.[ID]
Should give release

Member 10286520 11-Jun-15 6:44am

Thank you very much :) it works successfully :)

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Basmeh Awad · Answer 1 · 2015-06-11T00:47:00

Why not using another join instead of Sub Query

SQL

SELECT  MST_EMPLOYEE.[ID] as ID
      ,[EMPCODE],[EMPFNAME]+' '+[EMPMNAME]+' '+[EMPLNAME] AS EMPNAME
     ,DESIGNATION
    , min(Times_IN) as TimeIn , max(Times_Out) as TimeOut,
    (select count (distinct _Date) from Emp_Attendance  where  month (_date)=6 group by EmpID)
  FROM [MST_EMPLOYEE] inner join Emp_Attendance on Emp_Attendance.EmpID=MST_Employee.ID
INNER JOIN EMP_PROFESSIONALDETAILS ON MST_EMPLOYEE.ID=EMP_PROFESSIONALDETAILS.EMPID
INNER JOIN MST_DESIGNATION ON MST_DESIGNATION.ID=EMP_PROFESSIONALDETAILS.DESIGNATIONID
 where month(Times_IN) = 6
 group by MST_Employee.ID, MST_Employee.EmpCode, EmpFName, EmpMName, EmpLName,DESIGNATION