SQL Server 2005下的分页SQL

SQL Server 2005下的分页SQL
转自：http://www.cnblogs.com/didasoft/archive/2007/07/20/sqlserver-paging.html
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：

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SELECT TOP 20 * FROM (SELECT
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ROW_NUMBER() OVER (ORDER BY Namec) AS RowNumber,
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*
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FROM
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dbo.mem_member) _myResults
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WHERE
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RowNumber > 10000
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SELECT * FROM (SELECT
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ROW_NUMBER() OVER (ORDER BY Namec) AS RowNumber,
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*
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FROM
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dbo.mem_member) _myResults
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WHERE
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RowNumber between 10000 and 10020

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WITH OrderedResults AS
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(SELECT *, ROW_NUMBER() OVER (order by Namec) as RowNumber FROM dbo.mem_member)
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SELECT *
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FROM OrderedResults
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WHERE 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

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BEGIN
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DECLARE @PageLowerBound int
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DECLARE @PageUpperBound int
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-- Set the page bounds
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SET @PageLowerBound = 10000
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SET @PageUpperBound = 10020
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-- Create a temp table to store the select results
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Create Table #PageIndex
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(
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[IndexId] int IDENTITY (1, 1) NOT NULL,
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[Id] varchar(18)
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)
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-- Insert into the temp table
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declare @SQL as nvarchar(4000)
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SET @SQL = 'INSERT INTO #PageIndex (Id)'
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SET @SQL = @SQL + ' SELECT'
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SET @SQL = @SQL + ' TOP ' + convert(nvarchar, @PageUpperBound)
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SET @SQL = @SQL + ' m_id'
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SET @SQL = @SQL + ' FROM dbo.mem_member'
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SET @SQL = @SQL + ' ORDER BY NameC'
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-- Populate the temp table
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exec sp_executesql @SQL
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-- Return paged results
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SELECT O.*
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FROM
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dbo.mem_member O,
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#PageIndex PageIndex
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WHERE
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PageIndex.IndexID > @PageLowerBound
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AND O.[m_Id] = PageIndex.[Id]
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ORDER BY
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PageIndex.IndexID
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drop table #PageIndex
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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

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begin
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DECLARE @first_id varchar(18), @startRow int
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SET ROWCOUNT 10000
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SELECT @first_id = m_id FROM mem_member ORDER BY m_id
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SET ROWCOUNT 20
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SELECT m.*
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FROM mem_member m
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WHERE m_id >= @first_id
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ORDER BY m.m_id
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SET ROWCOUNT 0
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end
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