向表中插入数据，赋给相同主键一个序号，赋给同一个主键下的多条记录一个从一递增的序号

[数据农夫]

例如：

item1 item2 name subject
1 1 lily maths
1 2 lily english
1 3 lily chinese
2 1 lucy maths
2 2 lucy english


现有的数据位

lily maths
lily english
lily chinese
lucy maths
lucy english

[iqlife]

rank()函数试试

[talentwing]

insert into table (item1, item2, name, subject)
select tt.item1 , rank() over(partition by tt.rr order by tt.tml_type_cd,tt.tml_id) as item2, tt.name , tt.subject from (select dense_rank() over(order by t.name ) as item1,t.name,t.subject from table1 t ) tt;

[talentwing]

[Quote=引用 2 楼 的回复:]
SQL code

insert into table (item1, item2, name, subject)
select tt.item1 , rank() over(partition by tt.rr order by tt.tml_type_cd,tt.tml_id) as item2, tt.name , tt.subject from (select dense_rank(……
[/Quote]

呃,写错了....因为用的是我自己的表....改的时候没改完...
rank() over(partition by tt.rr order by tt.tml_type_cd,tt.tml_id) as item2
改成
rank() over(partition by tt.rr order by tt.name,tt.subject) as item2