如果參數填充，則使用篩選器選擇ROW_NUMBER（）？

Question

我有以下SQL Server 2008查詢。我想擴充它，以便在填充@Filter參數時將該值傳遞給每個字段（跨列）。沒有篩選器，查詢就可以完美工作。我不確定過濾器是否應該放在我擁有它們的地方。任何幫助將非常感激：

ALTER PROCEDURE [dbo].[pd_Get_Team2] 
@OutTotalRecCount INT OUTPUT, 
@CurrentPage INT, 
@PageSize INT, 
@Token as nvarchar(50), 
@UserID as nvarchar(50), 
@SortDirection INT, 
@SortField nvarchar(50), 
@Filter nvarchar(50) 

AS  
SELECT * FROM   
(SELECT ROW_NUMBER() OVER (
ORDER BY 
CASE WHEN @SortDirection = 1 AND @SortField = 1 THEN pd_Role.UserID END ASC, 
CASE WHEN @SortDirection = 2 AND @SortField = 1 THEN pd_Role.UserID END DESC 
) AS Row, 
pd_Role.id,  
pd_Role.Edit_Rights, 
pd_Role.UserID, 
pd_Role.Is_Approved, 
pd_Role.Login_Date, 
pd_Role.Team 

FROM pd_Role INNER JOIN 
pd_Token ON pd_Role.Token = pd_Token.Token 
WHERE 
(pd_Token.Token = @Token) AND (pd_Token.UserID = @UserID) 

--how do I structure a filter on these fields if the filter is populated? 
--CASE WHEN LEN(@Filter)> 1 
--AND pd_Role.Edit_Rights LIKE '%' + @Filter + '%' OR 
--AND pd_Role.UserID LIKE '%' + @Filter + '%' OR 
--AND pd_Role.Team LIKE '%' + @Filter + '%' 
-- 
) 
    AS TeamWithRowNumbers 
    WHERE Row >= (@CurrentPage - 1) * @PageSize + 1 AND Row <= @CurrentPage*@PageSize  

    SELECT @OutTotalRecCount = COUNT(*) FROM pd_Role 
    WHERE (pd_Role.Token = @Token) 

Answer 1

如果@Filter永遠不能爲null（但可能爲空）：

WHERE 
(pd_Token.Token = @Token) AND (pd_Token.UserID = @UserID) 

AND (
    pd_Role.Edit_Rights LIKE '%' + @Filter + '%' -- '%' + '' + '%' = Matches all 
    OR pd_Role.UserID LIKE '%' + @Filter + '%' 
    OR pd_Role.Team LIKE '%' + @Filter + '%' 
) 

Answer 2

試試這個：

AND ((@Filter IS NULL) OR 
    (pd_Role.Edit_Rights LIKE '%' + @Filter + '%' OR 
    AND pd_Role.UserID LIKE '%' + @Filter + '%' OR 
    AND pd_Role.Team LIKE '%' + @Filter + '%') 
) 

確保@Filter爲空時未提供，或使用@Filter = '' - 我喜歡第一種方法。