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发表时间:2009-12-31
CPU:Intel(R) Pentium(R) Dual T2390 1.86GHz 内存:1G(系统正常启动后约占300M空间) 硬盘:SATA 160G 8M Cache 系统:windowsxp+Sql Server 2005 sp2 测试数据:共100万条 分页测试代码: 1)row_number的两种分页方式:分别用top和between过滤 2)包含子查询结果的三种分页方式 共5种方式。 方式1: 每页显示200条 分页至10万条之后的第两百条记录 PROCEDURE [dbo].[proc_select_moauser1] AS BEGIN SET NOCOUNT ON; declare @tdiff datetime set @tdiff=getdate() select top 200 * from(select row_number() over(order by uid asc) as rownumber,* from moa_user ) as tb where rownumber>100000 select datediff(ms,@tdiff,getdate()) as '耗时(毫秒)' END 响应时间:156ms-210ms 方式2: 每页显示200条 分页至10万条之后的第两百条记录 PROCEDURE [dbo].[proc_select_moauser2] AS BEGIN -- SET NOCOUNT ON added to prevent extra result sets from -- interfering with SELECT statements. SET NOCOUNT ON; -- Insert statements for procedure here declare @tdiff datetime set @tdiff=getdate() select * from(select row_number() over(order by uid asc) as rownumber,* from moa_user ) as tb where rownumber between 100000 and 100200 select datediff(ms,@tdiff,getdate()) as '耗时(毫秒)' END 响应时间:153ms-176ms 方式3 每页显示200条 分页至10万条之后的第两百条记录 PROCEDURE [dbo].[proc_select_moauser3] AS BEGIN -- SET NOCOUNT ON added to prevent extra result sets from -- interfering with SELECT statements. SET NOCOUNT ON; declare @tdiff datetime set @tdiff=getdate() select top 200 * from moa_user a where uid not in(select top 100000 uid from moa_user b order by uid) select datediff(ms,@tdiff,getdate()) as '耗时(毫秒)' END 响应时间:270ms-290ms 方式4: 每页显示200条 分页至10万条之后的第两百条记录 PROCEDURE [dbo].[proc_select_moauser4] AS BEGIN -- SET NOCOUNT ON added to prevent extra result sets from -- interfering with SELECT statements. SET NOCOUNT ON; declare @tdiff datetime set @tdiff=getdate() -- Insert statements for procedure here select * from ( select TOP 200 * FROM ( SELECT TOP 100000 * from moa_user ORDER BY uid ASC ) as amoaUser ORDER BY uid DESC ) as bmoaUser ORDER BY uid ASC select datediff(ms,@tdiff,getdate()) as '耗时(毫秒)' END响应时间:950ms 方式5: 每页显示200条 分页至10万条之后的第两百条记录 PROCEDURE [dbo].[proc_select_moauser5] AS BEGIN -- SET NOCOUNT ON added to prevent extra result sets from -- interfering with SELECT statements. SET NOCOUNT ON; -- Insert statements for procedure here declare @tdiff datetime set @tdiff=getdate() -- Insert statements for procedure here SELECT TOP 200 * FROM moa_user WHERE (uid > (SELECT MAX(uid) FROM (SELECT TOP 100000 uid FROM moa_user ORDER BY uid) AS temp_moa_user)) ORDER BY uid select datediff(ms,@tdiff,getdate()) as '耗时(毫秒)' END 响应时间:135ms 声明:ITeye文章版权属于作者,受法律保护。没有作者书面许可不得转载。
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发表时间:2009-12-31
突然发现,楼主的机器配置就是我的机器配置T2390 ,1.86G
我的机器是联想C51,质量好的没话讲 |
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