SQL SERVER 2008 中三种分页方法与总结

建立表:

 1 CREATE TABLE [TestTable] (

 2  [ID] [int] IDENTITY (1, 1) NOT NULL ,

 3  [FirstName] [nvarchar] (100) COLLATE Chinese_PRC_CI_AS NULL ,

 4  [LastName] [nvarchar] (100) COLLATE Chinese_PRC_CI_AS NULL ,

 5  [Country] [nvarchar] (50) COLLATE Chinese_PRC_CI_AS NULL ,

 6  [Note] [nvarchar] (2000) COLLATE Chinese_PRC_CI_AS NULL

 7 ) ON [PRIMARY]

 8 GO

 9 

10 插入数据:(2万条,用更多的数据测试会明显一些)

11 SET IDENTITY_INSERT TestTable ON

12 declare @i int

13 set @i=1

14 while @i<=20000

15 begin

16     insert into TestTable([id], FirstName, LastName, Country,Note) values(@i, 'FirstName_XXX','LastName_XXX','Country_XXX','Note_XXX')

17     set @i=@i+1

18 end

19 SET IDENTITY_INSERT TestTable OFF

分页方案一:(利用Not In和SELECT TOP分页)

 1 SELECT TOP 10 *

 2 FROM TestTable

 3 WHERE (ID NOT IN

 4           (SELECT TOP 20 id

 5          FROM TestTable

 6          ORDER BY id))

 7 ORDER BY ID

 8 

 9 SELECT TOP 页大小 *

10 FROM TestTable

11 WHERE (ID NOT IN

12           (SELECT TOP 页大小*页数 id

13          FROM14          ORDER BY id))

15 ORDER BY ID

分页方案二:(利用ID大于多少和SELECT TOP分页)

 1 SELECT TOP 10 *

 2 FROM TestTable

 3 WHERE (ID >

 4           (SELECT MAX(id)

 5          FROM (SELECT TOP 20 id

 6                  FROM TestTable

 7                  ORDER BY id) AS T))

 8 ORDER BY ID

 9 

10 SELECT TOP 页大小 *

11 FROM TestTable

12 WHERE (ID >

13           (SELECT MAX(id)

14          FROM (SELECT TOP 页大小*页数 id

15                  FROM16                  ORDER BY id) AS T))

17 ORDER BY ID

分页方案三:(利用SQL的游标存储过程分页)

 1 create  procedure XiaoZhengGe

 2 @sqlstr nvarchar(4000), --查询字符串

 3 @currentpage int, --第N页

 4 @pagesize int --每页行数

 5 as

 6 set nocount on

 7 declare @P1 int, --P1是游标的id

 8  @rowcount int

 9 exec sp_cursoropen @P1 output,@sqlstr,@scrollopt=1,@ccopt=1,@rowcount=@rowcount output

10 select ceiling(1.0*@rowcount/@pagesize) as 总页数--,@rowcount as 总行数,@currentpage as 当前页

11 set @currentpage=(@currentpage-1)*@pagesize+1

12 exec sp_cursorfetch @P1,16,@currentpage,@pagesize

13 exec sp_cursorclose @P1

14 set 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。

总结:
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。

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