如何從這個mssql/php查詢中排除某些東西？

Question

我有這樣的：

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)所以騎士IDNum 21和25不會被包含在該查詢？

如何排除它們？

Answer 1

這不是一個簡單的你的外部查詢的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 

如果從主查詢中排除的話，他們將不會在內部查詢匹配不管是你讓他們加入在IDNUM場進不去。

在這個筆記上，你可能也想要一個read of this Q&A that I put together，它涵蓋了很多像這樣的SQL。