依據子句排列的模糊列名稱錯誤

此查詢爲何不起作用？依據子句排列的模糊列名稱錯誤

SELECT ROW_NUMBER() OVER (
     ORDER BY DocumentID 
     ) peta_rn 
    , d.DocumentID 
    , d.IsReEfiled 
    , d.IGroupID 
    , d.ITypeID 
    , d.RecordingDateTime 
    , dbo.GetLatestStatusDateTime(d.DocumentID) AS LatestStatusDatetime 
    , dbo.FnCanChangeDocumentStatus(d.DocumentStatusID, d.DocumentID) AS CanChangeStatus 
    , d.IDate 
    , d.InstrumentID 
    , d.DocumentStatusID 
    , ig.Abbreviation AS IGroupAbbreviation 
    , u.Username 
    , j.JDAbbreviation 
    , inf.DocumentName 
    , it.Abbreviation AS ITypeAbbreviation 
    , d.DocumentDate 
    , ds.Abbreviation AS DocumentStatusAbbreviation 
    , dbo.GetFlatDocumentName(d.DocumentID) AS FlatDocumentName 
FROM Documents d 
INNER JOIN IGroupes ig 
    ON d.IGroupID = ig.IGroupID 
LEFT JOIN ITypes it 
    ON d.ITypeID = it.ITypeID 
LEFT JOIN Users u 
    ON u.UserID = d.UserID 
LEFT JOIN DocumentStatuses ds 
    ON d.DocumentStatusID = ds.DocumentStatusID 
LEFT JOIN InstrumentFiles inf 
    ON d.DocumentID = inf.DocumentID 
INNER JOIN Jurisdictions j 
    ON j.JurisdictionID = d.JurisdictionID 
WHERE 1 = 1

，而這一個工程：

SELECT ROW_NUMBER() OVER (
     ORDER BY d.DocumentID 
     ) peta_rn 
    , d.DocumentID 
    , d.IsReEfiled 
    , d.IGroupID 
    , d.ITypeID 
    , d.RecordingDateTime 
    , dbo.GetLatestStatusDateTime(d.DocumentID) AS LatestStatusDatetime 
    , dbo.FnCanChangeDocumentStatus(d.DocumentStatusID, d.DocumentID) AS CanChangeStatus 
    , d.IDate 
    , d.InstrumentID 
    , d.DocumentStatusID 
    , ig.Abbreviation AS IGroupAbbreviation 
    , u.Username 
    , j.JDAbbreviation 
    , inf.DocumentName 
    , it.Abbreviation AS ITypeAbbreviation 
    , d.DocumentDate 
    , ds.Abbreviation AS DocumentStatusAbbreviation 
    , dbo.GetFlatDocumentName(d.DocumentID) AS FlatDocumentName 
FROM Documents d 
INNER JOIN IGroupes ig 
    ON d.IGroupID = ig.IGroupID 
LEFT JOIN ITypes it 
    ON d.ITypeID = it.ITypeID 
LEFT JOIN Users u 
    ON u.UserID = d.UserID 
LEFT JOIN DocumentStatuses ds 
    ON d.DocumentStatusID = ds.DocumentStatusID 
LEFT JOIN InstrumentFiles inf 
    ON d.DocumentID = inf.DocumentID 
INNER JOIN Jurisdictions j 
    ON j.JurisdictionID = d.JurisdictionID 
WHERE 1 = 1

正如你所看到的唯一的區別是我指定d.DocumentID。無論如何，我可以避免必須指定d.DocumentID，而不指定DocumentID而不使用額外的選擇？因爲畢竟，所有的documentID都指向相同的值。

來源

2012-10-17 Jack

如果你發現不明確的列錯誤，我認爲它應該是特定列的概率存在於多個表中，DB服務器無法從特定表中檢索列顯示你應該指定tablename.column的名稱它應該工作。 – gks

問題是DocumentID在InstrumentFiles和Documents這兩個表中，那麼查詢引擎如何知道您指的是哪一個？

所以總之，沒有，你必須在這個例子中指定d.DocumentID。

來源

2012-10-17 04:09:35

號

你應該已經因爲多個表提供的別名d包含DocumentID。發動機會在哪裏（或哪個表）應該採取訂單。

來源

2012-10-17 04:10:09

依據子句排列的模糊列名稱錯誤

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