Question

DECLARE @Names VARCHAR(8000) 
select @Names = COALESCE(@Names + ', ', '')  + (S.SubCategoryName+ '|' + CAST(R.RatingValue as varchar(5)))
from dbo.tblQuestions Q
        inner join dbo.tblSubCategory S on Q.SubCategoryId=S.SubCategoryId
        inner join dbo.tblRatings R on R.QuestionId=Q.QuestionId
        inner join dbo.tblReviews RR ON R.ReviewId=RR.ReviewId
        INNER JOIN dbo.tblCompanies C ON C.CompanyId=RR.CompanyId     
where C.CompanyId=7

如何对评级值求和？

Answer 1

评价什么？您想获得指定公司的所有评级值的总和吗？

如果是这样，试试这个：

select @Names = COALESCE(@Names + ', ', '')  + (S.SubCategoryName+ '|' + CAST(R.RatingValue as varchar(5))),
SUM(R.RatingValue) as ratingSum
from dbo.tblQuestions Q
        inner join dbo.tblSubCategory S on Q.SubCategoryId=S.SubCategoryId
        inner join dbo.tblRatings R on R.QuestionId=Q.QuestionId
        inner join dbo.tblReviews RR ON R.ReviewId=RR.ReviewId
        INNER JOIN dbo.tblCompanies C ON C.CompanyId=RR.CompanyId     
where C.CompanyId=7
group by C.CompanyId

内连接中的值的总和

1 个答案: