ORA-00979,但我在GROUP BY语句中的SELECT中有元素

Question

我有一个类似这样的查询:

SELECT field1,
       field2,
       field3,
       field4,
       field5,
       field6,
       field7,
       field8,
       field9,
       count(field9)
  FROM REPORT_TABLE
       LEFT JOIN
       DATAMINE
         USING (REPORT_ID)
 WHERE field1 LIKE 'MatchingText%'
   AND TS_START between to_date('2015-05-01', 'YYYY-MM-DD') and to_date('2015-06-06', 'YYYY-MM-DD') + 0.99999999
GROUP BY field9,
         1,
         2,
         3,
         4,
         5,
         6,
         7,
         8,
         9;

当我重新开始时,我明白了

ORA-00979: not a GROUP BY expression
00979. 00000 -  "not a GROUP BY expression"

我已经看到了这个问题,并解释说我需要包括在各个领域select中group by.我通过列号来做到这一点.

如何调整此查询以便我不会收到00979错误？

Answer 1

我通过列号来做到这一点.

这适用于像PostgreSQL这样的数据库:

SELECT abc, xyz
FROM ...
GROUP BY 1, 2 -- referencing abc and xyz by column number

但不是在Oracle中.在Oracle中,您不能SELECT从您的GROUP BY子句引用您的子句,但您必须再次重复完整的列表达式

SELECT abc, xyz
FROM ...
GROUP BY abc, xyz

......或者在你的情况下:

[...]
GROUP BY 
    field1,
    field2,
    field3,
    field4,
    field5,
    field6,
    field7,
    field8,
    field9;