首先，这是我的代码：
SELECT --PAT.V51_PRSNPERSONNUMBER AS PSNNMBR,
(PAT.V51_PRSNFIRSTNAME + ' ' + PAT.V51_PRSNLASTNAME) AS NAME,
--ADDR.V8_PERSONHOMEADDRLINE1 AS ADDRESS,
--ADDR.V8_PERSONHOMEADDRLINE2 AS ADDRESS2,
--ADDR.V8_PERSONHOMEADDRCITY AS CITY,
--ADDR.V8_PERSONHOMEADDRSTATE AS STATE,
--ADDR.V8_PERSONHOMEADDRZIP AS ZIP,
--PAT.V51_PRSNDOB AS DOB,
--PAT.V51_PRSNSEX AS SEX,
ADDR.V8_PERSONHOMEPHONENUMBER AS PHONE,
ADDR.V8_PERSONMOBILEPHONENUMBER AS CELLPHONE,
--CV.V9_DNPLANSORTNAME AS INSPLAN,
--CV.V9_DNCARRIERNAME AS INSCARRIER,
PAT.V51_PRSNEMAIL AS EMAIL,
'RSQ TEST' AS GROUPS
FROM I_DNCHGSPMTS CP
LEFT OUTER JOIN IPROCEDURE PR
ON (CP.DNCP_PROCEDURECODE = PR.PRPROCEDURECODE AND CP.OFFICE_ID = PR.OFFICE_ID)
LEFT OUTER JOIN I_VSTAFFCHGBILL STFBILL
ON (CP.OFFICE_ID = STFBILL.OFFICE_ID AND CP.DNCP_PRACTICEID = STFBILL.V69_STPRACTICEID AND
CP.DNCP_STAFFID_CREDITED = STFBILL.V69_STSTAFFID)
LEFT OUTER JOIN I_VPROVCHGBILL BILL
ON (STFBILL.V69_STSTAFFID = BILL.V58_PROVPROVIDERID AND STFBILL.OFFICE_ID = BILL.OFFICE_ID)
LEFT OUTER JOIN I_DNCHGCOVERAGE CHGCV
ON (CP.OFFICE_ID = CHGCV.OFFICE_ID AND CP.DNCP_CHARGESID = CHGCV.TPSCHARGESID)
LEFT OUTER JOIN I_VDNPLANCHGCV1 CV
ON (CHGCV.CHGCVR1PLANID = CV.V9_DNPLANID AND CHGCV.OFFICE_ID = CV.OFFICE_ID)
LEFT OUTER JOIN I_VDEPTCHG DEP
ON (CP.DNCP_DEPARTMENTCODE = DEP.V4_DPTDEPARTMENTCODE AND CP.OFFICE_ID = DEP.OFFICE_ID)
LEFT OUTER JOIN I_VDNADDRSPAT ADDR
ON (CP.OFFICE_ID = ADDR.OFFICE_ID AND CP.DNCP_PATIENTID = ADDR.V8_TPSPERSONID)
LEFT OUTER JOIN I_VPERSONPAT PAT
ON (CP.OFFICE_ID = PAT.OFFICE_ID AND CP.DNCP_PATIENTID = PAT.V51_PRSNPERSONID)
LEFT OUTER JOIN IACCOUNT ACC
ON (CP.OFFICE_ID = ACC.OFFICE_ID AND CP.DNCP_ACCOUNTSID = ACC.ACCACCOUNTSID)
LEFT OUTER JOIN IPAYMENT PMT
ON (CP.OFFICE_ID = PMT.OFFICE_ID AND CP.DNCP_PAYMENTSID = PMT.PMTPAYMENTSID)
LEFT OUTER JOIN I_VLUPROCCLASS CL
ON (PR.OFFICE_ID = CL.OFFICE_ID AND PR.PRCLASS = CL.V85_LUCLOOKUPCODE)
LEFT OUTER JOIN I_VSVCCNTRPROC SVC
ON (CP.OFFICE_ID = SVC.OFFICE_ID AND CP.DNCP_SERVICECENTERID = SVC.V75_SVCSERVICECENTERID)
LEFT OUTER JOIN I_DNDXPROCEVENT DX
ON (CP.OFFICE_ID = DX.OFFICE_ID AND CP.DNCP_PROCEDUREEVENTSID = DX.TPSPROCEDUREEVENTSID)
INNER JOIN (
SELECT CP.DNCP_PATIENTID AS PSNNMBR,
MAX(CP.DNCP_FROMSERVICEDATE) AS SVCDT,
MAX(CP.DNCP_AMOUNT_CHARGE) AS CHGAMT
FROM I_DNCHGSPMTS CP
LEFT OUTER JOIN IPROCEDURE PR
ON (CP.DNCP_PROCEDURECODE = PR.PRPROCEDURECODE AND CP.OFFICE_ID = PR.OFFICE_ID)
LEFT OUTER JOIN I_VSTAFFCHGBILL STFBILL
ON (CP.OFFICE_ID = STFBILL.OFFICE_ID AND CP.DNCP_PRACTICEID = STFBILL.V69_STPRACTICEID AND
CP.DNCP_STAFFID_CREDITED = STFBILL.V69_STSTAFFID)
LEFT OUTER JOIN I_VPROVCHGBILL BILL
ON (STFBILL.V69_STSTAFFID = BILL.V58_PROVPROVIDERID AND STFBILL.OFFICE_ID = BILL.OFFICE_ID)
LEFT OUTER JOIN I_DNCHGCOVERAGE CHGCV
ON (CP.OFFICE_ID = CHGCV.OFFICE_ID AND CP.DNCP_CHARGESID = CHGCV.TPSCHARGESID)
LEFT OUTER JOIN I_VDNPLANCHGCV1 CV
ON (CHGCV.CHGCVR1PLANID = CV.V9_DNPLANID AND CHGCV.OFFICE_ID = CV.OFFICE_ID)
LEFT OUTER JOIN I_VDEPTCHG DEP
ON (CP.DNCP_DEPARTMENTCODE = DEP.V4_DPTDEPARTMENTCODE AND CP.OFFICE_ID = DEP.OFFICE_ID)
LEFT OUTER JOIN I_VDNADDRSPAT ADDR
ON (CP.OFFICE_ID = ADDR.OFFICE_ID AND CP.DNCP_PATIENTID = ADDR.V8_TPSPERSONID)
LEFT OUTER JOIN I_VPERSONPAT PAT
ON (CP.OFFICE_ID = PAT.OFFICE_ID AND CP.DNCP_PATIENTID = PAT.V51_PRSNPERSONID)
LEFT OUTER JOIN IACCOUNT ACC
ON (CP.OFFICE_ID = ACC.OFFICE_ID AND CP.DNCP_ACCOUNTSID = ACC.ACCACCOUNTSID)
LEFT OUTER JOIN IPAYMENT PMT
ON (CP.OFFICE_ID = PMT.OFFICE_ID AND CP.DNCP_PAYMENTSID = PMT.PMTPAYMENTSID)
LEFT OUTER JOIN I_VLUPROCCLASS CL
ON (PR.OFFICE_ID = CL.OFFICE_ID AND PR.PRCLASS = CL.V85_LUCLOOKUPCODE)
LEFT OUTER JOIN I_VSVCCNTRPROC SVC
ON (CP.OFFICE_ID = SVC.OFFICE_ID AND CP.DNCP_SERVICECENTERID = SVC.V75_SVCSERVICECENTERID)
LEFT OUTER JOIN I_DNDXPROCEVENT DX
ON (CP.OFFICE_ID = DX.OFFICE_ID AND CP.DNCP_PROCEDUREEVENTSID = DX.TPSPROCEDUREEVENTSID)
WHERE CP.OFFICE_ID = 'EDQV'
AND CP.DNCP_ACTIVITYTYPE = 'CHG'
--AND (CP.DNCP_PROCEDURECODE LIKE '99490' OR CP.DNCP_PROCEDURECODE LIKE 'CCM')
AND PAT.V51_PRSNSEX = 'F'
AND (DATEDIFF(DAY,PAT.V51_PRSNDOB,GETDATE())/365) >= 65
AND SUBSTRING(DEP.V4_DPTNAME,1,5) IN ('PRIMA','WOMEN','URGIC')
AND (DATEDIFF(DAY,CP.DNCP_POSTDATE,GETDATE())) < 720
--FOLLOWING PROVIDES NON DIABETICS
AND (DX.PROCEVENTDIAG1CODE NOT IN ('E11.65', 'E11.9', 'E10.9', 'E13.8', 'E10.39', 'E11.00', 'E11.69', 'E11.319', 'E11.42', 'E11.359', 'E11.329', 'E13.9', 'E10.8', 'E11.59', 'E11.39', 'H35.00') OR
DX.PROCEVENTDIAG2CODE NOT IN ('E11.65', 'E11.9', 'E10.9', 'E13.8', 'E10.39', 'E11.00', 'E11.69', 'E11.319', 'E11.42', 'E11.359', 'E11.329', 'E13.9', 'E10.8', 'E11.59', 'E11.39', 'H35.00') OR
DX.PROCEVENTDIAG3CODE NOT IN ('E11.65', 'E11.9', 'E10.9', 'E13.8', 'E10.39', 'E11.00', 'E11.69', 'E11.319', 'E11.42', 'E11.359', 'E11.329', 'E13.9', 'E10.8', 'E11.59', 'E11.39', 'H35.00') OR
DX.PROCEVENTDIAG4CODE NOT IN ('E11.65', 'E11.9', 'E10.9', 'E13.8', 'E10.39', 'E11.00', 'E11.69', 'E11.319', 'E11.42', 'E11.359', 'E11.329', 'E13.9', 'E10.8', 'E11.59', 'E11.39', 'H35.00'))
GROUP BY CP.DNCP_PATIENTID
) AS MAXSVCDATE
ON (CP.DNCP_PATIENTID = MAXSVCDATE.PSNNMBR AND CP.DNCP_FROMSERVICEDATE = MAXSVCDATE.SVCDT AND CP.DNCP_AMOUNT_CHARGE = MAXSVCDATE.CHGAMT)
WHERE CP.OFFICE_ID = 'EDQV'
AND PAT.V51_PRSNPERSONNUMBER NOT IN (
SELECT PAT.V51_PRSNPERSONNUMBER
FROM I_DNCHGSPMTS CP
LEFT OUTER JOIN IPROCEDURE PR
ON (CP.DNCP_PROCEDURECODE = PR.PRPROCEDURECODE AND CP.OFFICE_ID = PR.OFFICE_ID)
LEFT OUTER JOIN I_VSTAFFCHGBILL STFBILL
ON (CP.OFFICE_ID = STFBILL.OFFICE_ID AND CP.DNCP_PRACTICEID = STFBILL.V69_STPRACTICEID AND
CP.DNCP_STAFFID_CREDITED = STFBILL.V69_STSTAFFID)
LEFT OUTER JOIN I_VPROVCHGBILL BILL
ON (STFBILL.V69_STSTAFFID = BILL.V58_PROVPROVIDERID AND STFBILL.OFFICE_ID = BILL.OFFICE_ID)
LEFT OUTER JOIN I_DNCHGCOVERAGE CHGCV
ON (CP.OFFICE_ID = CHGCV.OFFICE_ID AND CP.DNCP_CHARGESID = CHGCV.TPSCHARGESID)
LEFT OUTER JOIN I_VDNPLANCHGCV1 CV
ON (CHGCV.CHGCVR1PLANID = CV.V9_DNPLANID AND CHGCV.OFFICE_ID = CV.OFFICE_ID)
LEFT OUTER JOIN I_VDEPTCHG DEP
ON (CP.DNCP_DEPARTMENTCODE = DEP.V4_DPTDEPARTMENTCODE AND CP.OFFICE_ID = DEP.OFFICE_ID)
LEFT OUTER JOIN I_VDNADDRSPAT ADDR
ON (CP.OFFICE_ID = ADDR.OFFICE_ID AND CP.DNCP_PATIENTID = ADDR.V8_TPSPERSONID)
LEFT OUTER JOIN I_VPERSONPAT PAT
ON (CP.OFFICE_ID = PAT.OFFICE_ID AND CP.DNCP_PATIENTID = PAT.V51_PRSNPERSONID)
LEFT OUTER JOIN IACCOUNT ACC
ON (CP.OFFICE_ID = ACC.OFFICE_ID AND CP.DNCP_ACCOUNTSID = ACC.ACCACCOUNTSID)
LEFT OUTER JOIN IPAYMENT PMT
ON (CP.OFFICE_ID = PMT.OFFICE_ID AND CP.DNCP_PAYMENTSID = PMT.PMTPAYMENTSID)
LEFT OUTER JOIN I_VLUPROCCLASS CL
ON (PR.OFFICE_ID = CL.OFFICE_ID AND PR.PRCLASS = CL.V85_LUCLOOKUPCODE)
LEFT OUTER JOIN I_VSVCCNTRPROC SVC
ON (CP.OFFICE_ID = SVC.OFFICE_ID AND CP.DNCP_SERVICECENTERID = SVC.V75_SVCSERVICECENTERID)
LEFT OUTER JOIN I_DNDXPROCEVENT DX
ON (CP.OFFICE_ID = DX.OFFICE_ID AND CP.DNCP_PROCEDUREEVENTSID = DX.TPSPROCEDUREEVENTSID)
WHERE CP.OFFICE_ID = 'EDQV'
AND CP.DNCP_ACTIVITYTYPE = 'CHG'
AND BILL.V58_PROVSORTNAME LIKE '%LOCASCIO%'
AND (DATEDIFF(DAY,CP.DNCP_POSTDATE,GETDATE())) < 720
)
如果我运行该语句并排除主WHERE CP.OFFICE_ID = 'EDQV'之后的所有内容，则运行良好。如果我包含所有内容并将其更改为IN语句而不是NOT IN语句，那么它运行得很好。我已经运行了独立的查询并将它们拉到Excel中手动执行，因此我知道应该返回的记录数量。
如果我一起排除NOT IN语句，我会得到3,315条记录。如果我使用IN语句，我会得到283，这是准确的并在Excel中验证。因此，如果我将其更改为NOT IN语句，我应该获得3,032条记录。但是，我得到零！我在这里错过了一些愚蠢的东西吗？
如果有帮助，此代码的要点是返回所有65岁以上女性患者的联系人列表，这些患者不是糖尿病患者，并且在最近两次的初级保健，女性护理或紧急护理中被看到多年来，在过去的两年里，Locascio博士也没有见过他们。需要它也只返回每人一行。
答案 0 :(得分：0)
我的猜测是，这是PAT.V51_PRSNPERSONNUMBER可以为空的情况，很可能在NOT IN的左侧，但也可能在子选择中。在谓词中，表达式NULL = NULL具有值UNKNOWN（而不是TRUE或FALSE）。这具有从结果中排除任何行的效果。由于（NULL！= NULL）也具有UNKNOWN值，因此无论哪种方式都排除相同的行。对于NOT IN谓词也是如此。如果上面的列为NULL，则它不会匹配subselect中返回的NULL值，无论是使用IN还是使用NOT IN运算符。 （如果您以前没有经历过这种情况，这通常不直观）
至于为什么PAT.V51_PRSNPERSONNUMBER为空，它可能处于连接条件，用于连接IV别名的IVERSIONPAT视图实例或表返回不匹配 - 对于左连接，它测量所有PAT列将为NULL 。第一步是单独运行子选择，看看上面的列实际上是否为某些行返回NULL - 可能是完整的3032个缺失的行并从那里开始。