Question

如何将以下存储过程中由星号标记的最内层SELECT语句的计数作为输出参数返回？

Create procedure MySp 
AS
Select  RowNumber,NewsId From 
(
    Select Row_Number() Over (ORDER BY FirstVisit) as 'RowNumber',NewsId From 
        (
            * Select Distinct NewsId,FirstVisit,PublishDate From VwNewsPack 
        ) as t
) as tt         
Where NewsId between 10 and 20

Answer 1

你不能一体化。也就是说，都分配给变量并选择结果集。这是另一个。

您可以返回一个额外的列：

Select  RowNumber,NewsId,InnerCount From 
(
    Select Row_Number() Over (ORDER BY FirstVisit) as 'RowNumber', NewsId
      , COUNT(*) OVER () AS InnerCount
    From 
       (
        Select Distinct NewsId,FirstVisit,PublishDate From VwNewsPack 
    ) as t
) as tt         
Where NewsId between 10 and 20

如果这还不够好，那么你需要一个内部选择的临时表，并指定@@ ROWCOUNT作为变量

从包含多个派生表的存储过程返回输出参数

1 个答案: