SQL - 多部分标识符错误：无法绑定多部分标识符“OBDATE.SUMMARY_BLOCK_ID”

Question

不知道为什么我会收到以下错误... 无法绑定多部分标识符“OBDATE.SUMMARY_BLOCK_ID”。

这是我的加入声明...

LEFT OUTER JOIN
     (SELECT SUMMARY_BLOCK_ID
            ,max(ob_dt_eddsys_dt) as [DUE_DATE]                             
     from HSB_DATING AS OBDATE
     GROUP BY SUMMARY_BLOCK_ID) AS [LATEST_DUE_DATE]
ON OBHSBV.SUMMARY_BLOCK_ID = OBDATE.SUMMARY_BLOCK_ID

Answer 1

对于这部分查询：

LEFT OUTER JOIN ( 
    SELECT SUMMARY_BLOCK_ID , max(ob_dt_eddsys_dt) as [DUE_DATE]
    FROM HSB_DATING AS OBDATE
    GROUP BY SUMMARY_BLOCK_ID
) AS [LATEST_DUE_DATE]
    ON OBHSBV.SUMMARY_BLOCK_ID = OBDATE.SUMMARY_BLOCK_ID

OBDATE 在外部查询中不可用。您将此派生表命名为 [LATEST_DUE_DATE]，因此您应该使用它来引用它：

ON OBHSBV.SUMMARY_BLOCK_ID = [LATEST_DUE_DATE].SUMMARY_BLOCK_ID