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随着信息时代的发展信息系统的使用越来越多,信息量越来越大;当信息量越来越大,这在数据 展示,特别是报表这块对系统展现效率要求越来越高,对于千万级数据量的展示必须得使用分页来展示。 www.2cto.com If object_id(‘SP_Pagination‘)is not null drop proc SP_Pagination go Create PROCEDURE SP_Pagination /**//* *************************************************************** ** 千万数量级分页存储过程 ** *************************************************************** 参数说明: www.2cto.com .Tables :表名称,视图(试图这边目前还有点小问题) .PrimaryKey :主关键字 .Sort :排序语句,不带Order By 比如:NewsID Desc,OrderRows Asc .CurrentPage :当前页码 .PageSize :分页尺寸 .Filter :过滤语句,不带Where .Group :Group语句,不带Group By ***************************************************************/ ( @Tables varchar(2000), @PrimaryKey varchar(500), @Sort varchar(500) = NULL, @CurrentPage int = 1, @PageSize int = 5, @Fields varchar(2000) = ‘*‘, @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(1000) DECLARE @SortName varchar(1000) DECLARE @strSortColumn varchar(1000) DECLARE @operator char(2) DECLARE @type varchar(1000) 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 print ‘1‘ print REPLACE(@Sort, ‘ASC‘, ‘‘) SET @strSortColumn = REPLACE(@Sort, ‘ASC‘, ‘‘) print @strSortColumn SET @operator = ‘>=‘ print @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 print @SortTable print @SortName 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 --print @type --print @prec IF CHARINDEX(‘char‘, @type) > 0 SET @type = @type + ‘(‘ + CAST(@prec AS varchar) + ‘)‘ DECLARE @strPageSize varchar(500) DECLARE @strStartRow varchar(500) 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(500)) SET @strStartRow = CAST(((@CurrentPage - 1)*@PageSize + 1) AS varchar(500)) /**//*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 = ‘‘ /*print @type print @strStartRow print @strSortColumn print @Tables print @strFilter print @strGroup print @Sort*/ /**//*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 + ‘ ‘ ) 下面是在数据库查询分析器里面怎么调用这个存储过程的实例。如图所示为Traffic_Sites原表查询的结果集。 以Traffic_Sites表为例执行分页存储过程脚本:exec SP_Pagination ‘Traffic_Sites‘,‘Id‘,‘Id asc‘,1,5,‘*‘,‘‘,‘‘ 执行上述SQL结果如图所示:
来源于:http://www.2cto.com/database/201212/178073.html
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原文地址:http://www.cnblogs.com/dingyingsi/p/4557461.html