group-by - GROUP BY 句の group by リストに使用される式では、集計またはサブクエリを使用できません

Question

グループ化でエラーが発生しています...助けてください。私のSQLコードは以下です。医師名の 1 列、メディケア患者数 2 列、非メディケア患者数 3 列を取得しようとしています。

SELECT DoctorListName,
(CASE WHEN InsuranceCarrierName IN ('Humana Medicare','Medicare','Humana Gold Plus Medicare')
THEN count(uvPatientInsurance.InsuranceCarrierName) END) as CountMedicare,
(CASE WHEN InsuranceCarrierName NOT IN ('Humana Medicare','Medicare','Humana Gold Plus Medicare')
THEN count(uvPatientInsurance.InsuranceCarrierName) END) as CountNOTMedicare

FROM (STPN.dbo.vSelectPatient vSelectPatient
INNER JOIN STPN.dbo.uvPatientInsurance uvPatientInsurance ON vSelectPatient.PatientId=uvPatientInsurance.PatientId)
INNER JOIN STPN.dbo.uvVisit uvVisit ON vSelectPatient.PatientId=uvVisit.PatientId

WHERE vSelectPatient.PatientStatusMId=-900
AND (uvVisit.Entered>={ts '2011-01-01 00:00:00'}
AND uvVisit.Entered<{ts '2012-09-30 00:00:01'})
GROUP BY DoctorListName,
(CASE WHEN InsuranceCarrierName IN ('Humana Medicare','Medicare','Humana Gold Plus Medicare')
THEN count(uvPatientInsurance.InsuranceCarrierName) END),
(CASE WHEN InsuranceCarrierName NOT IN ('Humana Medicare','Medicare','Humana Gold Plus Medicare')
 THEN count(uvPatientInsurance.InsuranceCarrierName) END)

Answer 1

通常、COUNTまたは集計関数を使用する場合は、GROUP BY句を指定する必要があります...エラーが示すように：

SELECT DoctorListName,
(CASE WHEN InsuranceCarrierName IN ('Humana Medicare','Medicare','Humana Gold Plus  Medicare')
THEN count(uvPatientInsurance.InsuranceCarrierName) END) as CountMedicare,
(CASE WHEN InsuranceCarrierName NOT IN ('Humana Medicare','Medicare','Humana Gold Plus Medicare')
THEN count(uvPatientInsurance.InsuranceCarrierName) END) as CountNOTMedicare

FROM (STPN.dbo.vSelectPatient vSelectPatient
INNER JOIN STPN.dbo.uvPatientInsurance uvPatientInsurance ON vSelectPatient.PatientId=uvPatientInsurance.PatientId)
INNER JOIN STPN.dbo.uvVisit uvVisit ON vSelectPatient.PatientId=uvVisit.PatientId

WHERE vSelectPatient.PatientStatusMId=-900
AND (uvVisit.Entered>={ts '2011-01-01 00:00:00'}
AND uvVisit.Entered<{ts '2012-09-30 00:00:01'})
GROUP BY DoctorListName

GROUP BY句は列のみを使用でき、のような集計関数は使用できませんCOUNT。