SQL Server 通用分页存储过程

USE [DB]
GO
/****** Object:  StoredProcedure [dbo].[pro_pageList]    Script Date: 10/23/2015 16:41:39 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

ALTER PROCEDURE [dbo].[pro_pageList]
(
@tblName   varchar(255),       -- 表名

@strGetFields varchar(1000) = ‘*‘,  -- 需要返回的列 

@fldName varchar(255)=‘‘,      -- 排序的字段名

@PageSize   int = 40,          -- 页尺寸

@PageIndex  int = 1,           -- 页码

@doCount  bit = 0,   -- 返回记录总数, 非 0 值则返回

@OrderType bit = 0,  -- 设置排序类型, 非 0 值则降序
@strWhere  varchar(1500)=‘‘  -- 查询条件 (注意: 不要加 where)
)
AS

declare @strSQL   varchar(5000)       -- 主语句

declare @strTmp   varchar(110)        -- 临时变量

declare @strOrder varchar(400)        -- 排序类型

 

if @doCount != 0

  begin

    if @strWhere !=‘‘

    set @strSQL = ‘select count(*) as Total from ‘ + @tblName + ‘ where ‘+@strWhere

    else

    set @strSQL = ‘select count(*) as Total from ‘ + @tblName 

end  

--以上代码的意思是如果@doCount传递过来的不是0，就执行总数统计。以下的所有代码都是@doCount为0的情况

else

begin

 

if @OrderType != 0

begin

    set @strTmp = ‘<(select min‘

set @strOrder = ‘ order by ‘ + @fldName +‘ desc‘

--如果@OrderType不是0，就执行降序，这句很重要！

end

else

begin

    set @strTmp = ‘>(select max‘

    set @strOrder = ‘ order by ‘ + @fldName +‘ asc‘

end

 

if @PageIndex = 1

begin

    if @strWhere != ‘‘   

    set @strSQL = ‘select top ‘ + str(@PageSize) +‘ ‘+@strGetFields+ ‘  from ‘ + @tblName + ‘ where ‘ + @strWhere + ‘ ‘ + @strOrder

     else

     set @strSQL = ‘select top ‘ + str(@PageSize) +‘ ‘+@strGetFields+ ‘  from ‘+ @tblName + ‘ ‘+ @strOrder

--如果是第一页就执行以上代码，这样会加快执行速度

end

else

begin

--以下代码赋予了@strSQL以真正执行的SQL代码

set @strSQL = ‘select top ‘ + str(@PageSize) +‘ ‘+@strGetFields+ ‘  from ‘

    + @tblName + ‘ where ‘ + @fldName + ‘‘ + @strTmp + ‘(‘+ @fldName + ‘) from (select top ‘ + str((@PageIndex-1)*@PageSize) + ‘ ‘+ @fldName + ‘ from ‘ + @tblName + ‘‘ + @strOrder + ‘) as tblTmp)‘+ @strOrder

 

if @strWhere != ‘‘

    set @strSQL = ‘select top ‘ + str(@PageSize) +‘ ‘+@strGetFields+ ‘  from ‘

        + @tblName + ‘ where ‘ + @fldName + ‘‘ + @strTmp + ‘(‘

        + @fldName + ‘) from (select top ‘ + str((@PageIndex-1)*@PageSize) + ‘ ‘

        + @fldName + ‘ from ‘ + @tblName + ‘ where ‘ + @strWhere + ‘ ‘

        + @strOrder + ‘) as tblTmp) and ‘ + @strWhere + ‘ ‘ + @strOrder

end 

end   

exec (@strSQL)