2

我有这个查询：

SELECT TO_CHAR(HON.CREATE_DT,'DD-MM-YYYY') as CREATE_DT, 
       HON.ACCOUNT_NO,(SELECT TO_CHAR(CURRENT_DATE - INTERVAL '7' DAY, 'DD-MM-YYYY') FROM DUAL) AS NV
              FROM medium.HONSCRIBERS HON, 
                   medium.HONSCRIBER_TEXT pcode, 
                   medium.ACCESS_NUMBERS accnr
              WHERE 
                accnr.STATUS_CD = 'CU' AND
                pcode.TRADING_AS ='7777777'AND
                HON.ACCOUNT_NO=pcode.ACCOUNT_NO AND
                HON.ACCOUNT_NO=accnr.ACCOUNT_NO

它返回：

[0] => Array
        (
            [CREATE_DT] => 28-02-2008
            [ACCOUNT_NO] => 20340322
            [NV] => 20-05-2011
        )

    [1] => Array
        (
            [CREATE_DT] => 28-02-2008
            [ACCOUNT_NO] => 20340322
            [NV] => 20-05-2011
        )

我需要比较日期 CREATE_DT 和 NV 我的查询：

SELECT TO_CHAR(HON.CREATE_DT,'DD-MM-YYYY') as CREATE_DT, 
       HON.ACCOUNT_NO,(SELECT TO_CHAR(CURRENT_DATE - INTERVAL '7' DAY, 'DD-MM-YYYY') FROM DUAL) AS NV
              FROM medium.HONSCRIBERS HON, 
                   medium.HONSCRIBER_TEXT pcode, 
                   medium.ACCESS_NUMBERS accnr
              WHERE 
                accnr.STATUS_CD = 'CU' AND          CREATE_DT < NV AND
                pcode.TRADING_AS ='7777777'AND
                HON.ACCOUNT_NO=pcode.ACCOUNT_NO AND
                HON.ACCOUNT_NO=accnr.ACCOUNT_NO

我有这个错误：

[code] => 904
 [message] => ORA-00904: "NV": invalid identifier
 [offset] => 325

为什么他总是给我写信：“NV”：无效标识符？感谢帮助。

4

1 回答 1

5

您不能在同一查询的 WHERE 子句中使用列别名。您必须重复它是别名的表达式：

AND CREATE_DT < (CURRENT_DATE - INTERVAL '7' DAY)

（注意你不想要 TO_CHAR 否则比较将无法正常工作）

于 2011-05-27T12:01:24.723 回答