如何编辑此mssql查询？

Question

我在下面将这个查询与我的部落排名php脚本相关联。

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

我想为MannerPoint添加第二条规则，作为“忠诚度”的补充。 因此，它将同时显示方式和忠诚度积分，并按两者进行排序。

例如，如果氏族拥有10000忠诚度和100礼节，则其排名将高于20000忠诚度和仅50礼节。

我尝试了几次，但是失败了。 如果有人愿意帮助我，将不胜感激。

编辑：我尝试过： SELECT TOP 100 IDNum, IDName, Nation, (SELECT SUM(LoyaltyPoint) FROM USERDATA WHERE USERDATA.Knights = KNIGHTS.IDNum AND USERDATA.Authority IN(1, 2)) as ClanLoyalty, (SELECT SUM(MannerPoint) FROM USERDATA WHERE USERDATA.Knights = KNIGHTS.IDNum AND USERDATA.Authority IN(1, 2))) as MannerPoint FROM KNIGHTS ORDER BY ClanLoyalty DESC, MannerPoint DESC

但它根本不显示。

Answer 1

您可以使用外部应用对LoyaltyPoint和MannerPoint进行MannerPoint ：

select top 100
    k.IDNum, 
    k.IDName, 
    k.Nation, 
    u.ClanLoyalty,
    u.ClanManner 
from KNIGHTS as k
    outer apply (
        select
            sum(u.LoyaltyPoint) as ClanLoyalty,
            sum(u.MannerPoint) as ClanManner
        from USERDATA as u
        where u.Knights = k.IDNum and u.Authority in (1, 2)
    ) as u
order by u.ClanManner desc, u.ClanLoyalty desc

或简单的子查询：

select top 100
    k.IDNum, 
    k.IDName, 
    k.Nation, 
    u.ClanLoyalty,
    u.ClanManner
from KNIGHTS as k
    left outer join (
        select
            u.Knights,
            sum(u.LoyaltyPoint) as ClanLoyalty,
            sum(u.MannerPoint) as ClanManner
        from USERDATA as u
        where u.Authority in (1, 2)
        group by u.Knights
    ) as u on u.Knights = k.IDNum
order by u.ClanManner desc, u.ClanLoyalty desc

不知道如何订购记录，如果要按ClanManner和ClanLoyalty的总和订购，则可以执行以下操作：

order by isnull(u.ClanManner, 0) + isnull(u.ClanLoyalty, 0) desc

Answer 2

这个：

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

有一个语法问题，其中带有一个额外的括号，应为：

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