千万数量级分页存储过程

/* *************************************************************** ** 中国无忧商务网千万数量级分页存

储过程 ** *************************************************************** 参数说明: 1.Tables :表名称

,视图 2.PrimaryKey :主关键字 3.Sort :排序语句,不带Order By 比如:NewsID Desc,OrderRows Asc

4.CurrentPage :当前页码 5.PageSize :分页尺寸 6.Filter :过滤语句,不带Where 7.Group :Group语句,不带

Group By 版权所有:中国无忧商务网(http://www.cn5135.com) 欢迎试用,有什么心得请 M


CREATE PROCEDURE CN5135_SP_Pagination
/*
***************************************************************
**  中国无忧商务网千万数量级分页存储过程                     **
***************************************************************
参数说明:
1.Tables             :表名称,视图
2.PrimaryKey         :主关键字
3.Sort               :排序语句,不带Order By 比如:NewsID Desc,OrderRows Asc
4.CurrentPage        :当前页码
5.PageSize           :分页尺寸
6.Filter             :过滤语句,不带Where
7.Group             :Group语句,不带Group By

版权所有:中国无忧商务网(http://www.cn5135.com)
欢迎试用,有什么心得请 Mail:xzhijun@GMail.com
注:转载请保留相关版权说明,谢谢!^_^
***************************************************************/
(
@Tables varchar(1000),
@PrimaryKey varchar(100),
@Sort varchar(200) = NULL,
@CurrentPage int = 1,
@PageSize int = 10,
@Fields varchar(1000) = '*',
@Filter varchar(1000) = NULL,
@Group varchar(1000) = NULL
)
AS

/*默认排序*/
IF @Sort IS NULL OR @Sort = ''
SET @Sort = @PrimaryKey

DECLARE @SortTable varchar(100)
DECLARE @SortName varchar(100)
DECLARE @strSortColumn varchar(200)
DECLARE @operator char(2)
DECLARE @type varchar(100)
DECLARE @prec int

/*设定排序语句.*/
IF CHARINDEX('DESC',@Sort)>0
BEGIN
SET @strSortColumn = REPLACE(@Sort, 'DESC', '')
SET @operator = '<='
END
ELSE
BEGIN
IF CHARINDEX('ASC', @Sort) = 0
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

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 varchar(50)
DECLARE @strStartRow varchar(50)
DECLARE @strFilter varchar(1000)
DECLARE @strSimpleFilter varchar(1000)
DECLARE @strGroup varchar(1000)

/*默认当前页*/
IF @CurrentPage < 1
SET @CurrentPage = 1

/*设置分页参数.*/
SET @strPageSize = CAST(@PageSize AS varchar(50))
SET @strStartRow = CAST(((@CurrentPage - 1)*@PageSize + 1) AS varchar(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 ' + @Group + ' '
ELSE
SET @strGroup = ''

/*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 + '
'
)
GO

posted @ 2007-03-06 13:55  M'  阅读(441)  评论(1编辑  收藏  举报