create proc Pager
@PageIndex int,
@PageSize int,
@PageCount int out,
@RecordCount int out
as
select @RecordCount= count(*) from film_type
set @PageCount = CEILING(@RecordCount * 1.0 / @PageSize)
declare @topCount int
SET @topCount = @RecordCount - @PageSize * @PageIndex
DECLARE @SQLSTR NVARCHAR(1000)
if @PageIndex=0 or @RecordCount <=0
begin
set @SQLSTR=N'select top '+str(@PageSize) +' film_id,film_name from film_type order by film_id desc'
end
else
begin
if @PageIndex=@PageCount-1
begin
set @SQLSTR=N'select * from (select top '+str(@topCount)+' film_id,film_name from film_type order by film_id asc)T order by film_id desc'
end
else
begin
set @SQLSTR=N'select top '+str(@PageSize)+' * from (select top '+str(@topCount)+' film_id,film_name from film_type order by film_id asc)T order by film_id desc '
end
end
print @SQLSTR
EXEC (@SQLSTR)
drop proc Pager
declare @pageCount int
declare @recordCount int
exec Pager 0,5,@pageCount out,@recordCount out
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