Error in list of function arguments: '=' not recognized. unable to parse query text. - C# Table Adapter

问题

This is a follow-up of a previous requestion. Here Is the link

It Was about selecting Value from the same field twice with different conditions and display results in separate fields

And Used Following Code In table Adapter - IIF

SELECT AttendanceReg.StudentID,AttendanceReg.Studname, AttendanceReg.StudSex,
AttendanceReg.StudCourse,
SUM(IIf( AttendanceReg.AttendStatus = 'Present', 1,0)) AS TotalPresent,
SUM(IIf( AttendanceReg.AttendStatus = 'Absent', 1,0)) AS TotalAbsent, 
DatePart('m', AttendanceReg.DateOfAttendance) AS MYMONTH

FROM (AttendanceReg
    INNER JOIN LocalTable ON
    AttendanceReg.StudCourse = LocalTable.AttendCourse 
    AND 
    DatePart('m', AttendanceReg.DateOfAttendance) = LocalTable.AttentMonth)

GROUP BY AttendanceReg.StudentID, AttendanceReg.Studname,
    AttendanceReg.StudSex, AttendanceReg.StudCourse,
    DatePart('m', AttendanceReg.DateOfAttendance)

ORDER BY DatePart('m', AttendanceReg.DateOfAttendance) DESC

Also, I Have Tried by Replacing "IIF" With "Switch" Like Below

SUM(SWITCH(EmpAttendance.AttendStatus = 'Present',1,
EmpAttendance.AttendStatus = 'Absent', 0)) AS TotalPresent,
SUM(SWITCH(EmpAttendance.AttendStatus = 'Absent',1,
EmpAttendance.AttendStatus = 'Present', 0)) AS TotalAbsent,

Both the Querys Are Working Prefectly While Testing. But this what happening While trying to create table adapter :(

- how to solve this issue?

• Can use any other Query instead of this?

来源：https://stackoverflow.com/questions/41888400/error-in-list-of-function-arguments-not-recognized-unable-to-parse-query-t