Question

页: 1 WHERE条,取决于每个国家或市有多少人。

如果在一州有10人以上想要<代码>。 WHERE:

WHERE u.StateID = @StateID

如果在城市里有10多人,我想:

WHERE u.CityID = @CityID

而不是

WHERE u.StateID = @StateID

如果在城市或州有10人,我想:

WHERE u.CountryID =  1 



ALTER PROCEDURE GetHighscore
(@UserID int)
AS
BEGIN
Declare @StateCount int
Declare @CityCount int
Declare @StateID int
Declare @CityID int

SELECT @StateID=StateID FROM tblUser WHERE UserID = @UserID

SELECT @CityID=CityID FROM tblUser WHERE UserID = @UserID

SELECT  @StateCount=COUNT(DISTINCT tblUserTrix.UserID)
FROM            tblUserTrix INNER JOIN
                         tblUser ON tblUserTrix.UserID = tblUser.UserID
WHERE        (tblUser.StateID = @StateID)

SELECT @CityCount=COUNT(DISTINCT tblUserTrix.UserID)
FROM            tblUserTrix INNER JOIN
                         tblUser ON tblUserTrix.UserID = tblUser.UserID
WHERE        (tblUser.CityID = @CityID)


SELECT TOP 10        ut.UserID, SUM(t.Hardness) AS TotalTrixPoints, u.FirstName, u.LastName, u.StateID, u.CityID, tblSweCitys.CityName
FROM            tblUserTrix AS ut INNER JOIN
                         tblUser AS u ON ut.UserID = u.UserID INNER JOIN
                         tblState ON u.StateID = tblState.StateID INNER JOIN
                         tblCitys ON u.CityID = tblCitys.CityID LEFT OUTER JOIN
                         tblTrix AS t ON ut.TrixID = t.TrixID

WHERE CASE 
WHEN @StateCount > 10 
THEN u.StateID = @StateID

WHEN @CityCount > 10 
THEN u.CityID = @CityID
ELSE u.CountryID =  1 
        END = ?

GROUP BY ut.UserID, u.FirstName, u.LastName, u.CityID, u.StateID, tblCitys.CityName
ORDER BY TotalTrixPoints DESC   

END

Answer 1

你们必须使用和(或)操作者,而不是使用化学文摘社。

(@StateCount > 10 AND u.StateID = @StateID) OR (@CityCount > 10 AND CityID = @CityID) OR (CountryID =  1 )

Some like this.

<>UPDADE

因此,实际上,这个例子不利于你正常工作。在条款方面,你需要更加复杂。引证:

(@StateCount > 10 AND u.StateID = @StateID)
OR
(@CityCount > 10 AND @StateCount <= 10 AND CityID = @CityID)
OR
(@StateCount <= 10 AND @CityCount <= 10 AND CountryID =  1 )

<><>UPDATE 2>

更糟糕的是:

(@StateCount > 10 AND u.StateID = @StateID)
OR
(@StateCount <= 10 
    AND
    (
        (@CityCount > 10 AND CityID = @CityID)
        OR
        (@CityCount <= 10 AND CountryID =  1 )
    )   
)

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