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ID£¬±àºÅÊý£¬µØÇø
1£¬ 090001£¬¹ãÖÝ
2£¬ 090002£¬Ïã¸Û
3£¬ 090003£¬¹ãÖÝ
4£¬ 090004£¬¶«¾©
5£¬ 090005£¬¹ãÖÝ
6£¬ 090006£¬Ïã¸Û
7£¬ 090007£¬¹ãÖÝ
8£¬ 090008£¬Ïã¸Û
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¼´»ñµÃ½á¹ûΪ£º¹ãÖÝ£¬090007
Ïã¸Û£¬090008
¶«¾©£¬090004
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select µØÇø£¬max(±àºÅÊý) from ±í group by µØÇø
SQL code:
select µØÇø,max(±àºÅÊý) from tb
group by µØÇø
SQL code:
--or
select * from tb t where not exists(select 1 from tb where µØÇø=t.µØÇø and ±àºÅÊý>t.±àºÅÊý )
SQL code:
-->Title:Generating test data
-->Author:wufeng4552
-->Date :2009-10-07 14:47:36
if not object_id('tb') is null
drop table tb
Go
Create table tb([ID] int,[±àºÅÊý] nvarchar(6),[µØÇø] nvarchar(2))
Insert tb
select 1,N'090001',N'¹ãÖÝ' union all
select 2,N'090002',N'Ïã¸Û' union all
select 3,N'090003',N'¹ãÖÝ' union all
select 4,N'090004',
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with adod_dict do
begin
close;
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select * from
±íA LEFT OUTER JOIN ±íB ON (±íA.id || ' ' =±íB.id) ,±íC , ±íD, ±íE
WhereÆäËûÌõ¼þ
select * ......
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