sql存储过程分页

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
--分页存储过程  
CREATE PROCEDURE [dbo].[sp_Paging] 
( 
@Tables nvarchar(1000),                --表名/视图名
@PrimaryKey nvarchar(100),             --主键
@Sort nvarchar(200) = NULL,            --排序字段(不带order by)
@pageindex int = 1,                    --当前页码
@PageSize int = 10,                    --每页记录数
@Fields nvarchar(1000) = N'*',         --输出字段
@Filter nvarchar(1000) = NULL,         --where过滤条件(不带where)
@Group nvarchar(1000) = NULL,          --Group语句(不带Group By)
@TotalCount int OUTPUT                 --总记录数
) 
AS  
 
DECLARE @SortTable nvarchar(100) 
DECLARE @SortName nvarchar(100) 
DECLARE @strSortColumn nvarchar(200) 
DECLARE @operator char(2) 
DECLARE @type nvarchar(100) 
DECLARE @prec int 

--设定排序语句
IF @Sort IS NULL OR @Sort = ''     
   SET @Sort = @PrimaryKey      
IF CHARINDEX('DESC',@Sort)>0   
BEGIN         
    SET @strSortColumn = REPLACE(@Sort, 'DESC', '')         
    SET @operator = '<='     
END 
ELSE     
BEGIN                
    SET @strSortColumn = REPLACE(@Sort, 'ASC', '')                
    SET @operator = '>='     
END 
IF CHARINDEX('.', @strSortColumn) > 0     
BEGIN         
    SET @SortTable = SUBSTRING(@strSortColumn, 0, CHARINDEX('.',@strSortColumn))
    SET @SortName = SUBSTRING(@strSortColumn, CHARINDEX('.',@strSortColumn) + 1, LEN(@strSortColumn))     
END 
ELSE     
BEGIN         
    SET @SortTable = @Tables         
    SET @SortName = @strSortColumn  
END 

--设置排序字段类型和精度 
SELECT @type=t.name, @prec=c.prec FROM sysobjects o 
       JOIN syscolumns c on o.id=c.id 
       JOIN systypes t on c.xusertype=t.xusertype WHERE o.name = @SortTable AND c.name = @SortName
        
IF CHARINDEX('char', @type) > 0    
   SET @type = @type + '(' + CAST(@prec AS varchar) + ')'
   
DECLARE @strPageSize nvarchar(50) 
DECLARE @strStartRow nvarchar(50) 
DECLARE @strFilter nvarchar(1000) 
DECLARE @strSimpleFilter nvarchar(1000) 
DECLARE @strGroup nvarchar(1000)  
 
IF @pageindex <1     
   SET @pageindex = 1  
SET @strPageSize = CAST(@PageSize AS nvarchar(50)) 
--设置开始分页记录数 
SET @strStartRow = CAST(((@pageindex - 1)*@PageSize + 1) AS nvarchar(50))  
--筛选以及分组语句
IF @Filter IS NOT NULL AND @Filter != ''     
BEGIN         
    SET @strFilter = ' WHERE ' + @Filter + ' ' 
    SET @strSimpleFilter = ' AND ' + @Filter + ' ' 
END 
ELSE     
BEGIN         
    SET @strSimpleFilter = ''         
    SET @strFilter = ''     
END 
IF @Group IS NOT NULL AND @Group != ''  
   SET @strGroup = ' GROUP BY ' 
--计算总记录数
DECLARE @TotalCountSql nvarchar(1000)
SET @TotalCountSql=N'SELECT @TotalCount=COUNT(*)' +N' FROM ' + @Tables + @strFilter
EXEC sp_executesql @TotalCountSql,N'@TotalCount int OUTPUT',@TotalCount OUTPUT
--执行查询语句    
EXEC(
'
DECLARE @SortColumn ' + @type + '
SET ROWCOUNT ' + @strStartRow + '
SELECT @SortColumn=' + @strSortColumn + ' FROM ' + @Tables + @strFilter + ' ' + @strGroup + ' ORDER BY ' + @Sort + '
SET ROWCOUNT ' + @strPageSize + '
SELECT ' + @Fields + ' FROM ' + @Tables + ' WHERE ' + @strSortColumn + @operator + ' @SortColumn ' + @strSimpleFilter + ' ' + @strGroup + ' ORDER BY ' + @Sort + '
'
)