SQL Server 2005通用分页存储过程及多表联接应用

栏目:MSSQL 来源:网络 关注: 时间:2019-11-17

这是写的一个分页存储过程,可应用于SQL Server 2005上面:
if object_ID('[proc_SelectForPager]') is not null
Drop Procedure [proc_SelectForPager]
Go
Create Proc proc_SelectForPager
(
@Sql varchar(max) ,
@Order varchar(4000) ,
@CurrentPage int ,
@PageSize int,
@TotalCount int output
)
As
/*Andy 2012-2-28 */
Declare @Exec_SQL nvarchar(max)
Set @Exec_SQL='Set @TotalCount=(Select Count(1) From ('+@Sql+') As a)'
Exec sp_executeSQL @Exec_SQL,N'@TotalCount int output',@TotalCount output
Set @Order=isnull(' Order by '+nullif(@Order,''),' Order By getdate()')
if @CurrentPage=1 /*经常会调用第1页,这里做特殊处理,少一层子查询*/
Set @Exec_SQL='
;With CTE_Exec As
(
'+@Sql+'
)
Select Top(@pagesize) *,row_number() Over('+@Order+') As r From CTE_Exec Order By r
'
Else
Set @Exec_SQL='
;With CTE_Exec As
(
Select *,row_number() Over('+@Order+') As r From ('+@Sql+') As a
)
Select * From CTE_Exec Where r Between (@CurrentPage-1)*@pagesize+1 And @CurrentPage*@pagesize Order By r
'
Exec sp_executeSQL @Exec_SQL,N'@CurrentPage int,@PageSize int',@CurrentPage,@PageSize
Go

调用方法:
1.单表:
代码如下:
Exec proc_SelectForPager @Sql = 'Select * from contacts a where a.ContactType=1', -- varchar(max)
@Order = '', -- varchar(4000)
@CurrentPage = 3, -- int
@PageSize = 20, -- int
@TotalCount = 0 -- int

2.多表联接:
代码如下:
Exec proc_SelectForPager @Sql =
'Select a.Staff,a.OU,b.FName+b.FName as Name
from staffOUHIST a
inner join Staff b on b.ID=a.Staff and a.ExpiryDate=''30001231''
', -- varchar(max)
@Order = '', -- varchar(4000)
@CurrentPage = 3, -- int
@PageSize = 20, -- int
@TotalCount = 0 -- int

注:在@Sql 中不能使用CTE。

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