T-sql 存储过程的分页

use pubs
go
if exists(select name from sysobjects where name = 'emp')
drop table emp
go
--复制表
select emp_id,fname,lname into emp from dbo.employee

--select * from emp

--例如，求第3页，每页10条
--即第21到30条记录
select top 10 * from emp
where emp_id not in(select top 20 emp_id from emp order by emp_id)
order by emp_id

--分页存储过程
if exists(select name from sysobjects where name = 'up_pager' and type ='p')
drop procedure up_pager
go
create procedure up_pager
@pageSize int, --每页显示记录数
@pageIndex int, --当前页码
@tableName varchar(30), --表名
@colName varchar(30) --排序的字段名
as
begin
declare @sqlStr varchar(300)
if @pageIndex = 1
set @sqlStr = ' select top '+cast(@pageSize as varchar(20))+' * from '+@tableName+
' order by '+@colName
else
set @sqlStr = ' select top '+cast(@pageSize as varchar(20))+' * from '+@tableName+
' where '+@colName+' not in '+
'(select top '+ cast((@pageIndex-1)*@pageSize as varchar(20)) +' '+@colName+' from '+@tableName+
' order by '+@colName+')'+
' order by '+@colName
--print @sqlStr
execute(@sqlStr)
end
go

execute up_pager 10,1,'emp','emp_id'

--例如求总记录数和总页数
select count(*) as 'rowcount','pageCount' = case
when count(*)% 10 = 0 then (count(*)/10)
when count(*)% 10 > 0 then (count(*)/10+1)
end
from emp

--求总记录数和总页数
if exists(select name from sysobjects where name = 'up_pagercount' and type ='p')
drop procedure up_pagercount
go
create procedure up_pagercount
@pageSize int, --每页显示记录数
@tableName varchar(30) --表名
as
begin
declare @sqlStr varchar(300)
set @sqlStr = 'select count(*) as ''RowCount'', pageCount = ' + ' case ' +
' when count(*)%'+cast(@pageSize as varchar(20)) +'=0 then count(*)/'+cast(@pageSize as varchar(20))+
' when count(*)%'+cast(@pageSize as varchar(20)) +'>0 then (count(*)/'+cast(@pageSize as varchar(20))+'+1)'+
' end' + ' from '+ @tableName
execute (@sqlStr)
end
go

execute up_pagercount 10,'emp'