在 MS Access 中,我有一些报告使用一些查询来显示日期范围内的数据。查询使用别名、if、sum 和 avg 函数,并连接多个表以获取其数据。
我想知道我是否可以使用 UNION ALL 和一个包含所有需要字段的表来显示这个表中的这个新数据以及旧数据,如果有人选择了一个跨越新的和老的。
这是一个示例“旧”查询:
SELECT tblAssessment.fldValid, tblATraining.fldTID, tblATraining.fldTCrsID,
tblCourses.fldCrsName, [fldCrsHrs]/8 AS Days, tblATraining.fldTLocAbr,
tblDistrict.fldDistAbr, tblRegion.fldRegName, tblATraining.fldTDateStart,
tblATraining.fldTDateEnd, tblATraining.fldTEnrolled, tblATraining.fldTPID,
tblPersonnel.fldPName, tblAssessment.fldTrngSID, tblAssessment.Q1,
IIf([fldValid]=True,IIf([Q1]>0,1,0),0) AS Q1Valid, tblAssessment.Q2,
IIf([fldValid]=True,IIf([Q2]>0,1,0),0) AS Q2Valid, tblAssessment.Q3,
IIf([fldValid]=True,IIf([Q3]>0,1,0),0) AS Q3Valid, tblAssessment.Q4,
IIf([fldValid]=True,IIf([Q4]>0,1,0),0) AS Q4Valid, tblAssessment.Q5,
IIf([fldValid]=True,IIf([Q5]>0,1,0),0) AS Q5Valid, tblAssessment.Q6,
IIf([fldValid]=True,IIf([Q6]>0,1,0),0) AS Q6Valid, tblAssessment.Q7,
IIf([fldValid]=True,IIf([Q7]>0,1,0),0) AS Q7Valid, tblAssessment.Q8,
tblAssessment.Q9,
IIf([fldValid]=True,IIf([Q9]>0,1,0),0) AS Q9Valid, tblAssessment.Q10,
IIf([fldValid]=True,IIf([Q10]>0,1,0),0) AS Q10Valid, tblAssessment.Q11,
IIf([fldValid]=True,IIf([Q11]>0,1,0),0) AS Q11Valid, tblAssessment.Q12,
IIf([fldValid]=True,IIf([Q12]>0,1,0),0) AS Q12Valid, tblAssessment.Q13,
tblAssessment.Q14,
IIf([fldValid]=True,IIf([Q14]>0,1,0),0) AS Q14Valid, tblAssessment.Q15,
IIf([fldValid]=True,IIf([Q15]>0,1,0),0) AS Q15Valid, tblAssessment.Q16,
IIf([fldValid]=True,IIf([Q16]>0,1,0),0) AS Q16Valid, tblAssessment.Q17,
IIf([fldValid]=True,IIf([Q17]>0,1,0),0) AS Q17Valid, tblAssessment.Q18,
IIf([fldValid]=True,IIf([Q18]>0,1,0),0) AS Q18Valid, tblAssessment.Q19,
IIf([fldValid]=True,IIf([Q19]>0,1,0),0) AS Q19Valid, tblAssessment.Q20,
tblAssessment.Q21,
IIf([fldValid]=True,IIf([Q21]>0,1,0),0) AS Q21Valid, tblAssessment.Q22,
IIf([fldValid]=True,IIf([Q22]>0,1,0),0) AS Q22Valid, tblAssessment.Q23,
IIf([fldValid]=True,IIf([Q23]>0,1,0),0) AS Q23Valid, tblAssessment.Q24,
IIf([fldValid]=True,IIf([Q24]>0,1,0),0) AS Q24Valid, tblAssessment.Q25,
IIf([fldValid]=True,IIf([Q25]>0,1,0),0) AS Q25Valid, tblAssessment.Q26,
IIf([fldValid]=True,IIf([Q26]>0,1,0),0) AS Q26Valid, tblAssessment.Q27,
IIf([fldValid]=True,IIf([Q27]>0,1,0),0) AS Q27Valid, tblAssessment.Q28,
IIf([fldValid]=True,IIf([Q28]>0,1,0),0) AS Q28Valid, tblAssessment.Q29,
tblAssessment.Q30,
tblAssessment.Q31, tblAssessment.Q32
FROM ((tblDistrict
LEFT JOIN tblRegion ON tblDistrict.fldDRegID = tblRegion.fldRegID)
RIGHT JOIN (((tblATraining
LEFT JOIN tblCourses ON tblATraining.fldTCrsID = tblCourses.fldCrsID)
LEFT JOIN tblPersonnel ON tblATraining.fldTPID = tblPersonnel.fldPID)
LEFT JOIN tblLocations ON tblATraining.fldTLocAbr = tblLocations.fldLID) ON tblDistrict.fldDistAbr = tblATraining.fldTDistAbr)
LEFT JOIN tblAssessment ON tblATraining.fldTID = tblAssessment.fldTrngCID
WHERE (((tblAssessment.fldValid)=True)
AND ((tblATraining.fldTCrsID) Like [forms]![fdlgRptCriteria].[selCrsCd])
AND ((tblATraining.fldTDateStart) Between [forms]![fdlgRptCriteria].[seldate1] And [forms]![fdlgRptCriteria].[seldate2])
AND ((tblAssessment.fldTrngSID) Is Not Null));