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
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


[解决办法]
rank()函数试试
[解决办法]

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() over(order by t.name ) as item1,t.name,t.subject from table1 t ) tt;
[解决办法]
探讨

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(……