Question

我的存储过程收到“@CatergoryIDs varchar”

@CatergoryIDs包含由“|”，

分隔的单个或多个ID

我的存储过程看起来像这样：

Select R.ID,,CategoryID, (sum(C.Rating)/Count(R.ID)) as "Rating"
    from Table1  R
    left outer join Table2 C
    ON R.ID = C.ID
    GROUP BY R.ID
    having R.CategoryID = @CatergoryID
    RETURN

Answer 1

您应该可以使用CHARINDEX。但是，效率非常低，最好将@CategoryID作为表变量。

SET @CatergoryID = '|'+@CatergoryID+'|';
SELECT R.ID, R.CategoryID, (SUM(C.Rating)/COUNT(R.ID)) AS Rating
    FROM Table1 AS R
    LEFT OUTER JOIN Table2 AS C
    ON R.ID = C.ID
    WHERE CHARINDEX('|'+R.CategoryID+'|', @CatergoryID)>0 
    GROUP BY R.ID, R.CategoryID

从表中选择*其中（动态条件）

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