SQL Server 2005下的分页SQL

其实基本上有三种方法:

1、使用SQL Server 2005中新增的ROW_NUMBER

几种写法分别如下:

1SELECT TOP 20 * FROM (SELECT
2    ROW_NUMBER() OVER (ORDER BY Namec) AS RowNumber,
3   *
4FROM
5    dbo.mem_member) _myResults
6WHERE
7    RowNumber > 10000
8
1SELECT * FROM (SELECT
2    ROW_NUMBER() OVER (ORDER BY Namec) AS RowNumber,
3   *
4FROM
5    dbo.mem_member) _myResults
6WHERE
7    RowNumber between 10000 and 10020
1WITH OrderedResults AS
2
3(SELECT *, ROW_NUMBER() OVER (order by Namec) as RowNumber FROM dbo.mem_member)
4
5SELECT *
6
7FROM OrderedResults
8
9WHERE RowNumber between 10000 and 10020

不管哪种写法,性能都不理想。在8,9万条数据的情况下要运行6秒左右。


2、使用临时表再加存储过程

1BEGIN
2                DECLARE @PageLowerBound int
3                DECLARE @PageUpperBound int
4                
5                -- Set the page bounds
6                SET @PageLowerBound = 10000
7                SET @PageUpperBound = 10020
8
9                -- Create a temp table to store the select results
10                Create Table #PageIndex
11                 (
12                    [IndexId] int IDENTITY (1, 1) NOT NULL,
13                    [Id] varchar(18)
14                 )
15                
16                -- Insert into the temp table
17                declare @SQL as nvarchar(4000)
18                SET @SQL = 'INSERT INTO #PageIndex (Id)'
19                SET @SQL = @SQL + ' SELECT'
20                SET @SQL = @SQL + ' TOP ' + convert(nvarchar, @PageUpperBound)
21                SET @SQL = @SQL + ' m_id'
22                SET @SQL = @SQL + ' FROM dbo.mem_member'
23                SET @SQL = @SQL + ' ORDER BY NameC'
24                
25                -- Populate the temp table
26                exec sp_executesql @SQL
27
28                -- Return paged results
29                SELECT O.*
30                FROM
31                     dbo.mem_member O,
32                     #PageIndex PageIndex
33                WHERE
34                     PageIndex.IndexID > @PageLowerBound
35                    AND O.[m_Id] = PageIndex.[Id]
36                ORDER BY
37                     PageIndex.IndexID
38                
39drop table #PageIndex            
40                END

而使用这种方法,在同样的情况下用时只需1秒。

看样子,row_number是个鸡肋。

3、如果觉得临时表不好,还可以使用SET ROWCOUNT

1begin
2DECLARE @first_id varchar(18), @startRow int
3    
4SET ROWCOUNT 10000
5SELECT @first_id = m_id FROM mem_member ORDER BY m_id
6
7SET ROWCOUNT 20
8
9SELECT m.*
10FROM mem_member m
11WHERE m_id >= @first_id
12ORDER BY m.m_id
13
14SET ROWCOUNT 0
15end

不过,这种方法有缺点。按ID排序就快,按其他字段排序就慢。

大家有什么意见,欢迎拍砖。

参考文章:

http://www.4guysfromrolla.com/webtech/042606-1.shtml

http://www.4guysfromrolla.com/webtech/041206-1.shtml

http://www.singingeels.com/Articles/Pagination_In_SQL_Server_2005.aspx

原文地址:http://www.cnblogs.com/didasoft/archive/2007/07/20/SqlServer-Paging.html

原文地址:https://www.cnblogs.com/appleseed/p/1290752.html