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mysql Group_Concat() Sum IF()

SELECT #stu.`Id` AS StudentId,
stu.`Name` AS StudentName,
stu.`StudyCode` AS StudyCode,
grade.`Name` AS GradeName,
bgroup.`Name` AS GroupName,
IF(stu.`Gender`='00050001','男','女') AS Sex,
SUM(IF(detail.`state`=1,1,0)) AS AttendCount,
SUM(IF(detail.`state`=2,1,0)) AS AbsenceCount,
SUM(IF(detail.`state`=3,1,0)) AS LateCount,
SUM(IF(detail.`state`=4,1,0)) AS LeaveCount,
GROUP_CONCAT(IF(detail.`state`=1,'',CONCAT( DATE(detail.`createdTime`),'第',batch.`whatTime`,'節',IF(detail.`state`=2,'缺勤',IF(detail.`state`=3,'遲到',IF(detail.`state`=4,'請假',''))),'(',detail.`lastUpdatorName`,')')) ) AS details   
FROM attend_attendancebatch AS batch
INNER JOIN attend_attendancedetail AS detail ON detail.`attendanceId`=batch.`id`
INNER JOIN bas_student AS stu ON stu.`Id`=detail.`studentId`
INNER JOIN bas_grade AS grade ON grade.id=stu.`GradeId`
INNER JOIN bas_group AS bgroup ON bgroup.`Id`=stu.`GroupId`
WHERE stu.`IsEnabled`=1  AND batch.`isDeleted`=0 
GROUP BY detail.`studentId`