sql 分页常见做法

set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go






ALTER PROCEDURE [dbo].[PROCE_SQL2005PAGECHANGE]
(
@TableName varchar(50),            --表名
@ReFieldsStr varchar(200) = '*',   --字段名(全部字段为*)
@OrderString varchar(200),         --排序字段(必须!支持多字段不用加order by)
@WhereString varchar(500) =N'',  --条件语句(不用加where)
@PageSize int,                     --每页多少条记录
@PageIndex int = 1 ,               --指定当前为第几页
@TotalRecord int output            --返回总记录数
)
AS

BEGIN

--处理开始点和结束点
Declare @StartRecord int;
Declare @EndRecord int; 
Declare @TotalCountSql nvarchar(500); 
Declare @SqlString nvarchar(2000);    
set @StartRecord = (@PageIndex-1)*@PageSize + 1
set @EndRecord = @StartRecord + @PageSize - 1
SET @TotalCountSql= N'select @TotalRecord = count(*) from ' + @TableName;--总记录数语句
SET @SqlString = N'(select row_number() over (order by '+ @OrderString +') as rowId,'+@ReFieldsStr+' from '+ @TableName;--查询语句
--
IF (@WhereString! = '' or @WhereString!=null)
BEGIN
SET @TotalCountSql=@TotalCountSql + '  where '+ @WhereString;
SET @SqlString =@SqlString+ '  where '+ @WhereString;            
END
--第一次执行得到
--IF(@TotalRecord is null)
--   BEGIN
EXEC sp_executesql @totalCountSql,N'@TotalRecord int out',@TotalRecord output;--返回总记录数
--  END
----执行主语句
set @SqlString ='select * from ' + @SqlString + ') as t where rowId between ' + ltrim(str(@StartRecord)) + ' and ' + ltrim(str(@EndRecord));
Exec(@SqlString)    
END