Only one expression can be specified in the select list when the subquery is not introduced with EXISTS.

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Why give this Error???

SQL

ALTER proc [dbo].[Mysp_selecttop_with_favorite]
@sort bit = 0
as
declare @tt as TABLE 
(
	[CategoryID] [tinyint] NOT NULL,
	[ItemID] [int] NULL,
	[ItemTitle] [nvarchar](4000) NULL,
	[ItemDate] [datetime] NULL,
	[MinutesAgo] [int] NULL,
	[ItemInsertDate] [datetime] NULL,
	[ItemImageMainURL] [varchar](4000) NULL,
	[ItemImageLocalURL] [varchar](4000) NULL,
	[ItemURL] [nvarchar](4000) NULL,
	[ItemDescription] [nvarchar](max) NULL,
	[ExDate] [datetime] NULL
)

INSERT INTO @tt(CategoryID,ItemID,ItemTitle,ItemDate,MinutesAgo,ItemInsertDate,ItemImageMainURL,ItemImageLocalURL,ItemURL,ItemDescription)
execute ('Mysp_CategoryAllFeedsItems_SelectTop')




UPDATE @tt
SET 
[@tt].ItemID=tblFavorite.ItemID,
[@tt].ItemTitle = tblFavorite.ItemTitle,
[@tt].ItemDate=tblFavorite.ItemInsertDate,
[@tt].MinutesAgo=tblFavorite.MinutesAgo,
[@tt].ItemInsertDate=tblFavorite.ItemInsertDate,
[@tt].ItemImageMainURL=tblFavorite.ItemImageMainURL,
[@tt].ItemImageLocalURL=tblFavorite.ItemImageLocalURL,
[@tt].ItemURL=tblFavorite.ItemURL,
[@tt].ItemDescription=tblFavorite.ItemDescription
FROM tblFavorite  
WHERE
[@tt].CategoryID = tblFavorite.CategoryID AND (DATEDIFF(minute, tblFavorite.ExDate, GETDATE())) <=0



select case(@sort)
when 0 then  (SElect top 4 * from @tt order by CategoryID asc)
when 1 then  (SElect top 4 * from @tt order by CategoryID desc)
end

Posted 30-Jun-14 18:34pm

‫محم د‬‎

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_Asif_ 1-Jul-14 1:23am

On which line you getting this problem?

1 solution

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Andrius Leonavicius · Accepted Answer · 2014-06-30T19:25:00

Hi,

That's because the CASE statement can return only one value, not multiple values.

Instead of this:

SQL

select case(@sort)
when 0 then  (SElect top 4 * from @tt order by CategoryID asc)
when 1 then  (SElect top 4 * from @tt order by CategoryID desc)
end

Try this:

SQL

if (@sort = 0)
   select top 4 * from @tt order by CategoryID asc
else
   select top 4 * from @tt order by CategoryID desc