sql server join 查询给出重复记录

Question

WITH  JC as -- Job Card
    (   
        select distinct(JOBCARDNOSTR),'Job Card' as Document, JobCardId, count(*) Count from JobCardMaster where (JobCardId = 50075 ) group by JobCardId,JOBCARDNOSTR
    ),
    PR as   -- Purchase Request
    (
        select distinct(PurchaseRequestNo),'Purchase Request' as Document, JobCardId, count(*) Count from PurchaseRequestMaster where (JobCardId = 50075) group by JobCardId,PurchaseRequestNo
    ),
    ENQ as ---- Enquiry
    (
        select distinct(enquiryno),'Enquiry' as Document, JobCardId, count(*) Count from EnquiryMaster where (JobCardId = 50075 ) group by JobCardId,enquiryno
    ),
    CMPRTV as ---- Comparative
    (
        select distinct(ComparativeNo),'Comparative' as Document, JobCardId ,count(*) Count from ComparativeMaster where (JobCardId = 50075 ) group by JobCardId,ComparativeNo
    ),
    PO as ---- Purchase Order 
    (
        select 'Purchase Order' as Document, JobCardId, poorderno,count(*) Count from PurchaseOrderMaster where (JobCardId = 50075 ) group by JobCardId,poorderno
    ),
    GRN as ---- GRN
    (
        Select distinct(GrnGinNo),'GRN' as Document, JobCardId, count(*) Count from Gin where (JobCardId = 50075 ) group by JobCardId,GrnGinNo
    ),
    TI as ---- Tax Invoice
    (
        Select distinct(GrnExInvno),'Tax Invoice' as Document, JobCardId, count(*) Count from Gin where (JobCardId = 50075 ) group by JobCardId,GrnExInvno
    ),
    DC as -- DC
    (
        Select distinct(dcrefno),'DC' as Document, JobCardId,count(*) Count from DCMaster where (JobCardId = 50075 ) group by JobCardId,dcrefno
    )
    select  
    ISNULL(JC.Count,0) as JCrdCount, JC.JOBCARDNOSTR,ISNULL(PR.Count,0) as PRCount, pr.PurchaseRequestNo
    ,ENQ.enquiryno, ISNULL(ENQ.Count,0) as ENQCount
    ,CMPRTV.ComparativeNo, ISNULL(CMPRTV.Count,0) as CMPRTVCount
    , PO.poorderno,ISNULL(PO.Count,0) as POCount, 
    GRN.GrnGinNo,ISNULL(GRN.Count,0) as GRNCount
    
    , TI.GrnExInvno,ISNULL(TI.Count,0) as TICount,
    DC.dcrefno,ISNULL(DC.Count,0) as DCCount
    FROM JC
     --JCrd 
    left JOIN PR ON JC.JobCardId = PR.JobCardId 
    left JOIN ENQ ON JC.JobCardId = ENQ.JobCardId
    left JOIN CMPRTV ON JC.JobCardId = CMPRTV.JobCardId
    left JOIN PO ON JC.JobCardId = PO.JobCardId 
    left JOIN GRN ON JC.JobCardId = GRN.JobCardId
    left JOIN TI ON JC.JobCardId = TI.JobCardId
    left JOIN DC ON JC.JobCardId = DC.JobCardId
    order by JC.JobCardId desc

Answer 1

distinct

不是一个函数。它并不意味着“在括号中紧随其后的值（某个值）上不同”，它只是意味着“在所有列上不同（其中一些可以在括号中）” .

因此，如果您只想在每个子查询中每个

JobCardId

一行，则仅按该分组。

WITH JC as
    -- Job Card
    (
        select
            MIN(JOBCARDNOSTR) AS JOBCARDNOSTR,
            'Job Card' as Document,
            JobCardId,
            count(*) Count
        from JobCardMaster
        where JobCardId = 50075
        group by JobCardId
    ),
    PR as
    -- Purchase Request
    (
        select
            MIN(PurchaseRequestNo) AS PurchaseRequestNo,
            'Purchase Request' as Document,
            JobCardId, count(*) Count
        from PurchaseRequestMaster
        where (JobCardId = 50075)
        group by JobCardId
    ),
    ENQ as
    ---- Enquiry
    (
        select
          MIN(enquiryno) AS enquiryno,
          'Enquiry' as Document,
          JobCardId,
          count(*) Count
        from EnquiryMaster
        where (JobCardId = 50075 )
        group by JobCardId
    ),
    CMPRTV as
    ---- Comparative
    (
        select
          MIN(ComparativeNo) AS ComparativeNo,
          'Comparative' as Document,
          JobCardId,
          count(*) Count
        from ComparativeMaster
        where (JobCardId = 50075 )
        group by JobCardId
    ),
    PO as
    ---- Purchase Order 
    (
        select
          'Purchase Order' as Document,
          JobCardId,
          MIN(poorderno) AS poorderno,
          count(*) Count
        from PurchaseOrderMaster
        where (JobCardId = 50075 )
        group by JobCardId
    ),
    GRN as
    ---- GRN
    (
        Select
          MIN(GrnGinNo), 'GRN' as Document, JobCardId, count(*) Count
        from Gin
        where (JobCardId = 50075 )
        group by JobCardId
    ),
    TI as
    ---- Tax Invoice
    (
        Select MIN(GrnExInvno) AS GrnExInvno, 'Tax Invoice' as Document, JobCardId, count(*) Count
        from Gin
        where (JobCardId = 50075 )
        group by JobCardId
    ),
    DC as
    -- DC
    (
        Select MIN(dcrefno) AS dcrefno, 'DC' as Document, JobCardId, count(*) Count
        from DCMaster
        where (JobCardId = 50075 )
        group by JobCardId,dcrefno
    )
select
    ISNULL(JC.Count,0) as JCrdCount,
    JC.JOBCARDNOSTR,
    ISNULL(PR.Count,0) as PRCount,
    pr.PurchaseRequestNo,
    ENQ.enquiryno,
    ISNULL(ENQ.Count,0) as ENQCount,
    CMPRTV.ComparativeNo,
    ISNULL(CMPRTV.Count,0) as CMPRTVCount,
    PO.poorderno,
    ISNULL(PO.Count,0) as POCount,
    GRN.GrnGinNo,
    ISNULL(GRN.Count,0) as GRNCount,    
    TI.GrnExInvno,
    ISNULL(TI.Count,0) as TICount,
    DC.dcrefno,
    ISNULL(DC.Count,0) as DCCount
FROM JC
    --JCrd 
    left JOIN PR ON JC.JobCardId = PR.JobCardId
    left JOIN ENQ ON JC.JobCardId = ENQ.JobCardId
    left JOIN CMPRTV ON JC.JobCardId = CMPRTV.JobCardId
    left JOIN PO ON JC.JobCardId = PO.JobCardId
    left JOIN GRN ON JC.JobCardId = GRN.JobCardId
    left JOIN TI ON JC.JobCardId = TI.JobCardId
    left JOIN DC ON JC.JobCardId = DC.JobCardId
order by
  JC.JobCardId desc;