Question

要查询的行数未知且将变量作为输入需要连接到其他表。

我创建了一个StoredPrecodure-FnGetSumScoreHelper（1）返回具有未知行数的表。将1视为sp的输入变量@regionId。此sp返回要执行的查询，并与其他表联接。

ALTER PROCEDURE [dbo].[SpFnGetSumScoreQuery] 
-- Add the parameters for the stored procedure here
@regionId nvarchar(255) ,
@output nvarchar(max) output

AS
BEGIN

DECLARE @cols AS NVARCHAR(MAX),
@query  AS NVARCHAR(MAX)


select @cols = STUFF((SELECT ',' + QUOTENAME(CategoryId) 
                from FnGetSumScoreHelper(1)
                group by CategoryId
                order by CategoryId
        FOR XML PATH(''), TYPE
        ).value('.', 'NVARCHAR(MAX)') 
    ,1,1,'')

set @output = 'SELECT PeriodId,' + @cols + ' from 
         (
            select CategoryId, PeriodId, Score
            from FnGetSumScoreHelper(1)
        ) x
        pivot 
        (
            sum(Score)
            for CategoryId in (' + @cols + ')
        ) p '

return

这是我想将其连接到其他表的方式：

DECLARE @cols AS NVARCHAR(MAX),
    @query  AS NVARCHAR(MAX),   
 @SumScoreCategories  nvarchar(max)

 EXEC SpFnGetSumScoreQuery 1, @SumScoreCategories OUTPUT



select [Period].Id as PeriodId, [period].[Name] as PeriodName, 
    RegionPeriodScore.AdminScore, RegionPeriodScore.UserScore        

from [period] left join RegionPeriodScore on [period].Id = RegionPeriodScore.PeriodId
inner join
(
    execute(@SumScoreCategories)

 ) SumScoreCategories 

on RegionPeriodScore.periodid = SumScoreCategories.periodid

我知道我无法加入sp，但是与需要输入变量的动态数据透视表结合的解决方案是什么？因为表值函数无法执行查询。

动态枢纽与表格连结

0 个答案: