使用多个表和键进行内部连接

Question

好吧我们开始吧。

我有4台具有相同数据库的服务器。有一个查询可以很好地从每个DB获取数据。它是这样的：

SELECT "blablablablabla"
FROM  [UNION_ALL_BASES]..OVPM T01 with (nolock)
INNER JOIN [UNION_ALL_BASES]..VPM2 T11 with (nolock) ON T01.UnionAll_Empresa = T11.UnionAll_Empresa and T01.DocEntry = T11.DocNum
INNER JOIN [UNION_ALL_BASES]..PCH6 T2 with (nolock) ON T11.UnionAll_Empresa = T2.UnionAll_Empresa and T11.DocEntry = T2.DocEntry and T11.InstId = T2.InstlmntID
INNER JOIN [UNION_ALL_BASES]..OPCH T3 with (nolock) ON T2.UnionAll_Empresa  = T3.UnionAll_Empresa and T2.DocEntry  = T3.DocEntry
INNER JOIN [UNION_ALL_BASES]..PCH1 T3a with (nolock) ON T3.UnionAll_Empresa = T3a.UnionAll_Empresa and T3.DocEntry = T3a.DocEntry
LEFT JOIN [UNION_ALL_BASES]..OOCR T3b with (nolock) ON T3a.UnionAll_Empresa = T3b.UnionAll_Empresa and T3a.OcrCode2 = T3b.OcrCode
INNER JOIN [UNION_ALL_BASES]..OSLP T4 with (nolock) ON T4.UnionAll_Empresa   = T4.UnionAll_Empresa and T3.SlpCode   = T4.SlpCode  
and  T11.InvType = ''18''
AND T01.Canceled <> ''Y''
AND T01.CashSum > 0

今天，我们有了一个新的数据库，它合并了所有这4个DB。这个新DB的每个表都是一个视图with和Union，其不同之处在于，我现在添加了一个名为"UnionAll_Empresa“的新列，以了解这一行来自哪个服务器。

例如：

CREATE VIEW AACP as
SELECT 'G8Networks Solucoes' as UnionAll_Empresa, * from SBO_G8NETWORKS_SOLUCOES.dbo.AACP
UNION All
SELECT 'G8Networks NIC' as UnionAll_Empresa, * from SBO_G8NETWORKS_NIC.dbo.AACP
UNION All
SELECT 'SPIN' as UnionAll_Empresa, * from SBO_SPIN.dbo.AACP
UNION All
SELECT 'FA2R' as UnionAll_Empresa, * from SBO_FA2R.dbo.AACP;

现在，我需要再次使用这个旧的查询，并使用这些新的“表”。问题是现在主键不再是唯一的了，因为同一表中有4台服务器。因此，解决方案是将"UnionAll_Empresa“字段(wich告诉服务器的名称)与查询中的主键一起添加为密钥。新的查询应该如下所示：

SELECT "blalalalalala"
FROM  [UNION_ALL_BASES]..OVPM T01 with (nolock)
INNER JOIN [UNION_ALL_BASES]..VPM2 T11 with (nolock) ON T01.DocEntry = T11.DocNum and T01.UnionAll_Empresa = T11.UnionAll_Empresa
INNER JOIN [UNION_ALL_BASES]..PCH6 T2 with (nolock) ON  T11.DocEntry = T2.DocEntry and T11.InstId = T2.InstlmntID and T11.UnionAll_Empresa = T2.UnionAll_Empresa
INNER JOIN [UNION_ALL_BASES]..OPCH T3 with (nolock) ON  T2.DocEntry  = T3.DocEntry and T2.UnionAll_Empresa  = T3.UnionAll_Empresa
INNER JOIN [UNION_ALL_BASES]..PCH1 T3a with (nolock) ON T3.DocEntry = T3a.DocEntry and T3.UnionAll_Empresa = T3a.UnionAll_Empresa
LEFT JOIN [UNION_ALL_BASES]..OOCR T3b with (nolock) ON  T3a.OcrCode2 = T3b.OcrCode and T3a.UnionAll_Empresa = T3b.UnionAll_Empresa
INNER JOIN [UNION_ALL_BASES]..OSLP T4 with (nolock) ON  T3.SlpCode   = T4.SlpCode and T4.UnionAll_Empresa   = T4.UnionAll_Empresa
WHERE T11.InvType = ''18''
AND T01.Canceled <> ''Y''
AND T01.CashSum > 0

但它显示了一个错误：

子查询返回的值超过一个。当子查询跟随=、!=、<、<=、>、>=或子查询用作表达式时，这是不允许的。

它仍然会为某些主键找到多个结果，即使当我添加与列"UnionAll_Empresa“(原始服务器的名称)的比较时也是如此。

我做错了什么吗？

-这是完整的查询

set @vQuery = '
SELECT   --Pagametos de NF em dinheiro 
T01.UnionAll_Empresa,
Base = ''' + @database + ''', 
NomeEmp = (select a.CompnyName from [UNION_ALL_BASES]..OADM a with (nolock)),
CNPJ = (select a.TaxIdNum from [UNION_ALL_BASES]..oadm a with (nolock)),
IE = (Select TaxIdNum2 from [UNION_ALL_BASES]..OADM with (nolock)),
Filial = (Select PrintHeadr from [UNION_ALL_BASES]..OADM with (nolock)),
Proj = isnull(T3.Project,''''),
OcrCode2 = isnull(T3a.OcrCode2,''0''),
OcrName = isnull(T3b.OcrName,''Sem projeto definido''),
''NF'' TipoDoc,
''DIN'' Tipo,
T01.CardCode, 
T01.CardName,
CardFName = (select CardFName from [UNION_ALL_BASES]..OCRD with (nolock) where OCRD.CardCode = T01.CardCode and OCRD.UnionAll_Empresa = T01.UnionAll_Empresa),
T01.DocEntry CodigoBaixaPagamento,
T11.DocEntry NumeroSapDocumento,
T01.DocDate DataDocBaixa,
T3.DocDate,
T11.InstId Parcela,
'''' SituacaoParc,
''1900-01-01'' DataUltBaixa,
T11.InvType,
T2.InsTotal ValorDaParcelaOriginal,
T01.DocDate DataLancamentoBaixa,
T2.DueDate VencimentoOriginalParcela,
T3.SeqCode,
SerieNF = (select SeqName from [UNION_ALL_BASES]..NFN1 with (nolock) where SeqCode = T3.SeqCode and UnionAll_Empresa = T3.UnionAll_Empresa),
T3.Series,
T3.Serial,
T3.SlpCode,
T4.SlpName,
round((T3a.LineTotal/T3.DocTotal)*(T11.SumApplied/T01.DocTotal)*(T01.CashSum),2) ValorPago,
T01.DocTotal TotalBaixa,
T01.CashSum TotalDinBaixa,
T01.TrsfrSum TotalTransfBaixa,
T01.[CheckSum] TotalCHBaixa,
T01.BoeSum TotalBoeBaixa,
T01.CreditSum TotalCCredBaixa,
Case 
When T01.CashSum   > 0 Then ''Dinheiro''
When T01.TrsFrSum  > 0 Then ''Transferência''
When T01.CreditSum > 0 Then ''Cartao''
End TipoDocumento,
'''' NossoNumBol,
'''' DigNossoNumBol,
''1900-01-01'' VencBoleto,
'''' CodBancoBol,
'''' NomeBancoBol,
0 VlrTotBol,
'''' NomeFPagtoBol,
'''' LinhaDigBol,
'''' TrsfrRef,
'''' NumCH,
'''' DataCH,
'''' StatusCH,
0 VlrTotCH,
'''' BancoCH,
'''' AgenciaCH,
'''' ContaCH,
'''' BoeStatus,
'''' CodCCred,
'''' NomeCCred,
'''' NumComprCartao,
0 NumParcCartao,
''1900-01-01'' PrimVencimentoCartao,
0 VlrTotCartao,
VlrDin = round((T3a.LineTotal/T3.DocTotal)*(T11.SumApplied/T01.DocTotal) * T01.CashSum,2),
VlrTransf = 0,
VlrCredit = 0,
VlrBol = 0,
VlrCH = 0,
VlrCart = 0,
VlrDev = 0,
VlrBLI = 0
FROM  [UNION_ALL_BASES]..OVPM T01 with (nolock)
INNER JOIN [UNION_ALL_BASES]..VPM2 T11 with (nolock) ON T01.DocEntry = T11.DocNum and T01.UnionAll_Empresa = T11.UnionAll_Empresa
INNER JOIN [UNION_ALL_BASES]..PCH6 T2 with (nolock) ON  T11.DocEntry = T2.DocEntry and T11.InstId = T2.InstlmntID and T11.UnionAll_Empresa = T2.UnionAll_Empresa
INNER JOIN [UNION_ALL_BASES]..OPCH T3 with (nolock) ON  T2.DocEntry  = T3.DocEntry and T2.UnionAll_Empresa  = T3.UnionAll_Empresa
INNER JOIN [UNION_ALL_BASES]..PCH1 T3a with (nolock) ON T3.DocEntry = T3a.DocEntry and T3.UnionAll_Empresa = T3a.UnionAll_Empresa
LEFT JOIN [UNION_ALL_BASES]..OOCR T3b with (nolock) ON  T3a.OcrCode2 = T3b.OcrCode and T3a.UnionAll_Empresa = T3b.UnionAll_Empresa
INNER JOIN [UNION_ALL_BASES]..OSLP T4 with (nolock) ON  T3.SlpCode   = T4.SlpCode and T4.UnionAll_Empresa   = T4.UnionAll_Empresa
WHERE T11.InvType = ''18''
AND T01.Canceled <> ''Y''
AND T01.CashSum > 0
'
exec ('insert into #RelContasPagar ' + @vQuery)

Answer 1

，我是不是做错什么了？

以下是连接条件中的一个问题：

and T4.UnionAll_Empresa   = T4.UnionAll_Empresa

T4呼叫T4！

Answer 2

我真的觉得这个问题超出了我的能力范围，但我会建议我们在一个数据仓库项目上做些什么。除了每个表上的标准ID主键外，在许多情况下，我们还添加了一个额外的键，我们称之为BK (Business )，我们试图确保它是唯一的。其用法与标准ID键略有不同，因为BK是一个字符串，其中嵌入了与业务相关的信息。我可以看到您使用它拥有一个“伪”主键，它还可以告诉您所检索的数据行的源是哪一台服务器。

这听起来可能很蹩脚，但这是我唯一能想到的。