KB2499023-修正：當複雜更新查詢在 SQL Server 2008 或 SQL Server 2008 R2 的執行方案中使用 JOIN 運算子時，不正確的結果

徵狀

當您執行的複雜更新查詢在 Microsoft SQL Server 2008 或 Microsoft SQL Server 2008 R2 的執行方案中使用 JOIN 運算子時，您可能會收到不正確的結果。 注意： 更新查詢可能包含子查詢、匯總函數及 DISTINCT 子句。如果您在 Microsoft SQL Server 2008 或 Microsoft SQL Server 2008 R2 並行資料倉儲中執行相同的查詢，您可能會收到另一組不正確的結果。 例如，當您執行下列程式碼時，可能會收到不正確的結果：

UPDATE RB SET rb1 = (SELECT AVG(DISTINCT T2_1.C1) AS C1 FROM (SELECT DISTINCT T3_1.C3 AS C1, T3_1.C5 AS C2 FROM (SELECT T5_1.c2 AS C1, T5_1.c2 AS C2, T5_1.c3 AS C3, T5_1.c3 AS C4, T5_1.c2 AS C5 FROM DC AS T5_1 UNION SELECT T5_1.c2 AS C1, T5_1.c3 AS C2, T5_1.c2 AS C3, T5_1.c2 AS C4, T5_1.c3 AS C5 FROM DC AS T5_1) AS T3_1) AS T2_1 WHERE (T2_1.C1 = rb3)), rb2 = (SELECT COUNT_BIG(DISTINCT T2_1.C1) AS C1 FROM (SELECT DISTINCT T3_1.C1 AS C1 FROM (SELECT T5_1.rc2 AS C1 FROM RC AS T5_1 UNION ALL SELECT T5_1.c3 AS C1 FROM DC AS T5_1) AS T3_1) AS T2_1 WHERE (T2_1.C1 > rb1)), rb3 = (SELECT COUNT_BIG(*) AS C1 FROM (SELECT DISTINCT T3_1.C1 AS C1, T3_1.C2 AS C2, T3_1.C3 AS C3, T3_1.C4 AS C4, T3_1.C5 AS C5, T3_1.C6 AS C6, T3_1.C7 AS C7, T3_1.C8 AS C8, T3_1.C9 AS C9, T3_1.C10 AS C10 FROM (SELECT T5_1.b2 AS C1, T5_1.b1 AS C2, T5_1.b3 AS C3, T5_1.b2 AS C4, T5_1.b2 AS C5, T5_1.b2 AS C6, T5_1.b2 AS C7, T5_1.b1 AS C8, T5_1.b2 AS C9, T5_1.b3 AS C10 FROM DB AS T5_1 UNION SELECT T5_1.ra3 AS C1, T5_1.ra3 AS C2, T5_1.ra3 AS C3, T5_1.ra3 AS C4, T5_1.ra2 AS C5, T5_1.ra3 AS C6, T5_1.ra1 AS C7, T5_1.ra1 AS C8, T5_1.ra1 AS C9, T5_1.ra1 AS C10 FROM RA AS T5_1) AS T3_1) AS T2_1 WHERE (T2_1.C2 <= rb3)) WHERE rb1 IN (SELECT T2_1.C1 AS C1 FROM (SELECT T4_1.a2 AS C1, T4_1.a1 AS C2, T4_1.a1 AS C3, T4_1.a2 AS C4, T4_1.a1 AS C5, T4_1.a2 AS C6, T4_1.a3 AS C7, T4_1.a1 AS C8 FROM DA AS T4_1 WHERE (T4_1.a1 > (SELECT MIN(DISTINCT T5_1.b3) AS C1 FROM DB AS T5_1 WHERE (T5_1.b3 <= T4_1.a1))) UNION ALL SELECT T4_1.a2 AS C1, T4_1.a2 AS C2, T4_1.a1 AS C3, T4_1.a1 AS C4, T4_1.a1 AS C5, T4_1.a1 AS C6, T4_1.a1 AS C7, T4_1.a3 AS C8 FROM DA AS T4_1) AS T2_1);

原因

這個問題是由 SQL Server 查詢優化程式中的錯誤所造成。

解決方案

狀態

Microsoft 已確認本篇文章＜適用於＞一節所列之 Microsoft 產品確實有上述問題。

參考

如需並行資料倉儲的詳細資訊，請造訪下列 Microsoft 網站：

並行資料倉儲的一般資訊如需有關 SQL Server 的增量服務模型的詳細資訊，請按一下下列文章編號，以查看 Microsoft 知識庫中的文章：

935897 您可以從 SQL Server 團隊取得增量服務模型，以提供已報告問題的修補程式如需 SQL Server 更新命名架構的詳細資訊，請按一下下列文章編號，以查看 Microsoft 知識庫中的文章：

822499 Microsoft SQL Server 軟體更新套件的新命名架構如需軟體更新術語的詳細資訊，請按一下下列文章編號，以查看 Microsoft 知識庫中的文章：

824684 描述 Microsoft 軟體更新所使用的標準術語說明