如何從此mssql / php查詢中排除某些內容？

Question

我有這個：

SELECT TOP 100 
    IDNum, 
    IDName, 
    Nation, 
    (SELECT 
        SUM(Loyalty) 
    FROM 
        USERDATA 
    WHERE 
        USERDATA.Knights = KNIGHTS.IDNum 
        AND USERDATA.Authority IN(1, 2)
    ) as ClanLoyalty 
FROM 
    KNIGHTS 
ORDER BY 
    ClanLoyalty DESC

但我想排除Knights (21 and 25)所以該查詢中包含騎士IDNum 21歲和25歲？

如何排除它們？

Answer 1

這不是您的外部查詢中的簡單where子句嗎？

SELECT TOP 100 
    IDNum, 
    IDName, 
    Nation, 
    (SELECT 
        SUM(Loyalty) 
    FROM 
        USERDATA 
    WHERE 
        USERDATA.Knights = KNIGHTS.IDNum 
        AND USERDATA.Authority IN(1, 2)
    ) as ClanLoyalty 
FROM 
    KNIGHTS 
where
    knights.idnum not in (21,22)
ORDER BY 
    ClanLoyalty DESC

如果您將其從主查詢中排除，則無論如何它們都不會在內部查詢中匹配，因為無論如何它們都已加入IDNum字段。

關於這一點，您可能還想閱讀一下我整理的這份問答，其中涵蓋了許多類似這樣的SQL。