
轻设计 / 轻生活 / 轻日记 / 轻梦想
=== zhoumojianshe ===
1、新建test表【作测试用】
create table test (
code varchar(10) ,
val varchar(20 ) )
2、填充数据
insert into test values ( '0001','aaa' )
insert into test values ( '0001','bbb' )
insert into test values ( '0001','ccc' )
insert into test values ( '0002','eee' )
insert into test values ( '0002','fff' )
3、查询数据
select row_number() over ( partition by code order by val ) xh , * from test