SQL Server 2005分页存储过程

刚开始学习分页存储过程的时候看到有很多长篇大论的代码，看起来很乱，现在有一个很好的分页存储过程，分享一下：

ALTER PROCEDURE [dbo].[pr_page_helper]

@top INT=NULL, --- 返回前N位记录 -1 ：全部

@ascOrDesc bit =NULL, ---1 :DESC 0:ASC

@Column NVARCHAR(2024) = NULL, ---返回的字段

@sqlWhere NVARCHAR(1024) = NULL, ---过滤条件

@orderBy NVARCHAR(1024) = NULL, --排序关键字 --还真不能空

@tableName NVARCHAR(100)=NULL, -- 表名

@currentPage INT = NULL, --页码

@pageSize INT = NULL, --一页的记录条数

@totalCount INT = NULL OUTPUT --记录总数

--@currentPage 和 @pageSize 同时不为空时则分页，其他则是返回前N个记录

AS

BEGIN

DECLARE @sql NVARCHAR(MAX)

DECLARE @tmp_sql NVARCHAR(MAX)

IF ISNULL(@currentpage,0)>0 AND ISNULL(@pagesize,0)>0

BEGIN

DECLARE @N_BEGIN INT

DECLARE @N_END INT

SET @N_BEGIN = @pageSize*(@currentPage-1)+1

SET @N_END = @pageSize*@currentPage

SET @tmp_sql = N'SELECT @pc1 = COUNT(*) '+N' FROM '+@tableName

IF NOT @sqlWhere IS NULL SET @tmp_sql = @tmp_sql + N' WHERE ' + @sqlWhere

EXECUTE sp_executesql @tmp_sql, N'@pc1 INT OUTPUT', @pc1= @totalCount OUTPUT

SET @sql = N' SELECT '+ @Column +N', ROW_NUMBER() OVER(ORDER BY ' + @orderBy

IF ISNULL(@ascOrDesc, 0) > 0

SET @sql = @sql + N' DESC ) AS ROW_NUMBER '

ELSE

SET @sql = @sql + N' ASC ) AS ROW_NUMBER '

SET @sql = @sql + N' FROM '+@tableName

IF NOT @sqlWhere IS NULL SET @sql = @sql + N' WHERE ' + @sqlWhere

SET @sql = N'WITH t AS(' + @sql + N') SELECT * FROM t WHERE t.ROW_NUMBER BETWEEN @between AND @end'

EXECUTE sp_executesql @sql, N'@between INT, @end INT', @between = @N_BEGIN, @end = @N_END

print @sql

print @tmp_sql

select @totalCount

END

ELSE

BEGIN

SET @sql = N'SELECT '

IF ISNULL(@top, 0) > 0 SET @sql = @sql + N' TOP ' + CAST(@top AS NVARCHAR) + N' '

SET @sql = @sql+ @Column + N' FROM '+@tableName

IF NOT @sqlWhere IS NULL SET @sql = @sql + N' WHERE ' + @sqlWhere

IF NOT @orderBy IS NULL

BEGIN

SET @sql = @sql + N' ORDER BY ' + @orderBy

IF ISNULL(@ascOrDesc, 0) > 0

SET @sql = @sql + N' DESC '

ELSE

SET @sql = @sql + N' ASC '

END

print @sql

EXECUTE sp_executesql @sql

END

END