三种SQL分页法

三种SQL分页法
   表中主键必须为标识列，[ID] int IDENTITY (1,1)
  1.分页方案一：(利用Not In和SELECT TOP分页)
语句形式：  
SELECT TOP 10 *
from TestTable
WHERE (ID NOT IN
          (SELECT TOP 20 id
         from TestTable
         ORDER BY id))
ORDER BY ID
SELECT TOP 页大小 *
from TestTable
WHERE (ID NOT IN
          (SELECT TOP (页大小*(页数-1)) id
         from 表
         ORDER BY id))
ORDER BY ID
   2.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 TestTable
WHERE (ID >=
          (SELECT MAX(id)
         from (SELECT TOP 21 id
                 from TestTable
                 ORDER BY id) AS T))
ORDER BY ID
SELECT TOP 页大小 *
from TestTable
WHERE (ID >=
          (SELECT MAX(id)
         from (SELECT TOP (页大小*(页数-1)+1) id
                 from 表
                 ORDER BY id) AS T))
ORDER BY ID
  3.分页方案三：(利用SQL的游标存储过程分页)
create  procedure SqlPager
@sqlstr nvarchar(4000), --查询字符串
@currentpage int, --第N页
@pagesize int --每页行数
as
set nocount on
declare @P1 int, --P1是游标的id
 @rowcount int
exec sp_cursoropen @P1 output,@sqlstr,@scrollopt=1,@ccopt=1, @rowcount=@rowcount