SQL 所选的非聚合值必须是关联组的一部分

Question

我不明白我在这里缺少什么。在我看来，我似乎在 select 语句

中包含了每个非聚合值

SELECT TOP 5
    f_ev2.Identifier,
    AVG(f_ev2.Identifier) AS Identifier,
    MIN(f_ev2.Event_dtm) AS Erster_PZ_Scan
FROM DB_DWH_MART_AKM_PLT.VW_F_EVENT f_ev2
INNER JOIN
    (
        SELECT 
        DISTINCT f_ev.AUFTRAGGEBER_EKP AS EKP
        FROM    DB_DWH_MART_AKM_PLT.VW_F_EVENT f_ev
        WHERE f_ev.PROCESS_NO = 1075
    ) AS manifest_users
ON f_ev2.AUFTRAGGEBER_EKP = manifest_users.EKP
WHERE f_ev2.event_dtm BETWEEN (date -1) AND  (date -10)
GROUP BY f_ev2.Identifier
HAVING (f_ev2.PROCESS_NO = 1 OR f_ev2.PROCESS_NO = 2)

为什么我得到

SQL Selected non-aggregate values must be part of the associated group

Answer 1

聚合后没有更多细节，即f_ev2.PROCESS_NO.

您可以将条件移动到 WHERE

AND f_ev2.PROCESS_NO IN (1, 2)

或应用聚合函数，例如

HAVING MIN(f_ev2.PROCESS_NO IN (1, 2)

但是后面的条件总是return一个空结果集，Explain 会揭示一个无法满足的条件:

WHERE f_ev2.event_dtm BETWEEN (date -1) AND  (date -10)

您必须切换日期：

WHERE f_ev2.event_dtm BETWEEN (current_date -10) AND  (current_date -1)

SQL 所选的非聚合值必须是关联组的一部分

SQL Selected non-aggregate values must be part of the associated group

sql

group-by

teradata