Question

我遇到了一个非常奇怪的问题，即查询返回大多数行而不是所有行。如果我在where子句中添加一个添加条件，则会显示缺失的行。

以下是我的询问：

SELECT T1.Table1ID,
    SUM(ISNULL([T4].Qty,0)) TotalQty
FROM dbo.Table1 (NOLOCK) T1
    INNER JOIN [dbo].Table2 (NOLOCK) T2 ON T1.Table2ID = T2.Table2ID
    INNER JOIN [dbo].Table3 (NOLOCK) T3 ON T2.DocTypeID = T3.DocTypeID
    INNER JOIN dbo.Table4 (NOLOCK) T4 ON T4.Table1ID = T1.Table1ID
WHERE T3.is1 = 0
GROUP BY T1.Table1ID
ORDER BY T1.Table1ID

这将返回除T1.Table1ID = 185671之外的所有行。如果我将其添加为类似的过滤器：

SELECT T1.Table1ID,
    SUM(ISNULL([T4].Qty,0)) TotalQty
FROM dbo.Table1 (NOLOCK) T1
    INNER JOIN [dbo].Table2 (NOLOCK) T2 ON T1.Table2ID = T2.Table2ID
    INNER JOIN [dbo].Table3 (NOLOCK) T3 ON T2.DocTypeID = T3.DocTypeID
    INNER JOIN dbo.Table4 (NOLOCK) T4 ON T4.Table1ID = T1.Table1ID
WHERE T3.is1 = 0
    AND T1.Table1ID = 185671
GROUP BY T1.Table1ID
ORDER BY T1.Table1ID

现在该行显示。有什么想法吗？

编辑：删除NOLOCK提示后的新查询。

SELECT T1.Table1ID,
    SUM(ISNULL([T4].Qty,0)) TotalQty
FROM dbo.Table1 T1
    INNER JOIN [dbo].Table2 T2 ON T1.Table2ID = T2.Table2ID
    INNER JOIN [dbo].Table3 T3 ON T2.DocTypeID = T3.DocTypeID
    INNER JOIN dbo.Table4 T4 ON T4.Table1ID = T1.Table1ID
WHERE T3.is1 = 0
    AND T1.Table1ID = 185671
GROUP BY T1.Table1ID
ORDER BY T1.Table1ID

SQL Server选择不返回所有行

0 个答案: