Question

我想在我的这个小问题上寻求帮助。我在我的子查询上进行查询和子查询，我想让它参数化。有办法吗？请参阅我的查询脚本。

select sum(issue) as [Issue], sum(nonissue) as [NonIssue]
from
(
AS
    select
        case when isissue = 1 then 1 else 0 end as 'issue',
        case when isissue = 0 then 1 else 0 end as 'nonissue',
        LastTicketStatusID
    from
        vw_Tickets
    where
        LastTicketStatusID = @LastTicketStatusID
) 
as Tickets

我总是遇到错误必须声明表变量“@LastTicketStatusID”。我应该在哪里声明参数？

谢谢， Nhoyti

Answer 1

如果这是用于存储过程......

CREATE PROCEDURE [dbo].[ProcedureName]
    @LastTicketStatusID INT
AS 

select
sum(issue) as [Issue], 
sum(nonissue) as [NonIssue]
from (
    select
    case when isissue = 1
        then 1 else 0 end as 'issue',
    case when isissue = 0
        then 1 else 0 end as 'nonissue',
    LastTicketStatusID
from vw_Tickets 
where LastTicketStatusID = @LastTicketStatusID ) as Tickets

否则

DECLARE @LastTicketStatusID INT
SELECT @LastTicketStatusID = yourDesiredID

Answer 2

与您的问题不相关，但假设vw_Tickets.isissue是一个位字段（或以其他方式约束为零或一个值）。可以删除内联查询以简化Launchy的答案：

select sum(isissue) as [Issue], 
    sum(1 - isissue) as [NonIssue]
from vw_Tickets 
where LastTicketStatusID = @LastTicketStatusID

Answer 3

位于查询的最顶层

Declare @LastTicketStatusID int
set @lastTicketStatusID = ####

带参数的子查询？

3 个答案: