gridview如何实现分页功能.

gridview如何实现分页功能.

方法一SELECT DISTINCT TOP 8 CategoryIDFROM tbl_Product_ProductsWHERE (UserID = 73) AND (CategoryID > (SELECT MAX(categoryid) FROM (SELECT DISTINCT TOP 16 categoryid FROM tbl_product_products where userid=73 ORDER BY categoryid) AS b))ORDER BY CategoryID--方法二select top 10 * from [order details]where orderid>all(select top 10 orderid from [order details] order by orderid)order by orderid下面的来自CSDN-------------------------------------SQL Server 存储过程的分页，这个问题已经讨论过几年了，很多朋友在问我，所以在此发表一下我的观点建立表：CREATE TABLE [TestTable] ( [ID] [int] IDENTITY (1, 1) NOT NULL , [FirstName] [nvarchar] (100) COLLATE Chinese_PRC_CI_AS NULL , [LastName] [nvarchar] (100) COLLATE Chinese_PRC_CI_AS NULL , [Country] [nvarchar] (50) COLLATE Chinese_PRC_CI_AS NULL , [Note] [nvarchar] (2000) COLLATE Chinese_PRC_CI_AS NULL ) ON [PRIMARY]GO插入数据：(2万条，用更多的数据测试会明显一些)SET IDENTITY_INSERT TestTable ONdeclare @i intset @i=1while @i<=20000begin insert into TestTable([id], FirstName, LastName, Country,Note) values(@i, 'FirstName_XXX','LastName_XXX','Country_XXX','Note_XXX') set @i=@i+1endSET IDENTITY_INSERT TestTable OFF-------------------------------------分页方案一：(利用Not In和SELECT TOP分页)语句形式：SELECT TOP 10 *FROM TestTableWHERE (ID NOT IN (SELECT TOP 20 id FROM TestTable ORDER BY id))ORDER BY IDSELECT TOP 页大小 *FROM TestTableWHERE (ID NOT IN (SELECT TOP 页大小*页数 id FROM 表 ORDER BY id))ORDER BY ID-------------------------------------分页方案二：(利用ID大于多少和SELECT TOP分页）语句形式：SELECT TOP 10 *FROM TestTableWHERE (ID > (SELECT MAX(id) FROM (SELECT TOP 20 id FROM TestTable ORDER BY id) AS T))ORDER BY IDSELECT TOP 页大小 *FROM TestTableWHERE (ID > (SELECT MAX(id) FROM (SELECT TOP 页大小*页数 id FROM 表 ORDER BY id) AS T))ORDER BY ID-------------------------------------分页方案三：(利用SQL的游标存储过程分页)create procedure XiaoZhengGe@sqlstr nvarchar(4000), --查询字符串@currentpage int, --第N页@pagesize int --每页行数asset nocount ondeclare @P1 int, --P1是游标的id @rowcount intexec sp_cursoropen @P1 output,@sqlstr,@scrollopt=1,@ccopt=1,@rowcount=@rowcount outputselect ceiling(1.0*@rowcount/@pagesize) as 总页数--,@rowcount as 总行数,@currentpage as 当前页 set @currentpage=(@currentpage-1)*@pagesize+1exec sp_cursorfetch @P1,16,@currentpage,@pagesize exec sp_cursorclose @P1set nocount off其它的方案：如果没有主键，可以用临时表，也可以用方案三做，但是效率会低。建议优化的时候，加上主键和索引，查询效率会提高。通过SQL 查询分析器，显示比较：我的结论是:分页方案二：(利用ID大于多少和SELECT TOP分页）效率最高，需要拼接SQL语句分页方案一：(利用Not In和SELECT TOP分页) 效率次之，需要拼接SQL语句分页方案三：(利用SQL的游标存储过程分页) 效率最差，但是最为通用在实际情况中，要具体分析。