SQL 查询第N条数据 分页查询

查询第N条数据:

declare @J int,@FID int,@FItemIDs int,@year int,@month int
set @J='1'
while @J <= 40
begin
 select top 1 * from (select top (@J) * from Table order by FID,FItemID)T1 order by FID desc,FItemID desc
 set @J=@J+1
end

查询第N页数据:

declare @J int,@N int,@FID int,@FItemIDs int,@year int,@month int
set @J='1'
set @N='5'    --一页多少数据
while @J <= 8
begin
 select top (1*(@N)) * from (select top ((@J)*(@N)) * from Table order by FID,FItemID)T1 order by FID desc,FItemID desc
 set @J=@J+1
end

分页查询:

1 SELECT TOP 页大小 *
2 FROM table1
3 WHERE id NOT IN
4           (
5           SELECT TOP 页大小*(页数-1) id FROM table1 ORDER BY id
6           )
7 ORDER BY id

                                                                                                                                                                              

1 SELECT TOP 页大小 * 
2 FROM 
3         (
4         SELECT ROW_NUMBER() OVER (ORDER BY id) AS RowNumber,* FROM table1
5         ) A
6 WHERE RowNumber > 页大小*(页数-1)

                                                                                                                                                                              

 1 --顺序写法:
 2 SELECT TOP 页大小 *
 3 FROM table1
 4 WHERE id >=
 5 (
 6 SELECT ISNULL(MAX(id),0) 
 7 FROM 
 8 (
 9 SELECT TOP 页大小*(页数-1)+1 id FROM table1 ORDER BY id
10 ) A
11 )
12 ORDER BY id

                                                                          

14 --降序写法: 15 SELECT TOP 页大小 * 16 FROM table1 17 WHERE id <= 18 ( 19 SELECT ISNULL(MIN(id),0) 20 FROM 21 ( 22 SELECT TOP 页大小*(页数-1)+1 id FROM table1 ORDER BY id Desc 23 ) A 24 ) 25 ORDER BY id Desc

                                                                                                                                                                         

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

                                                                                                                                                                        

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