使用键获取两列之间的数字列表

Question

I want to get the list of numbers in between two columns. A tables values will be used to generate more rows.

eg Table1:

Key StartNum EndNum
--- -------- ------
A   1        3
B   6        8

My output should be:

Key Num
--- ---
A   1
A   2
A   3
B   6
B   7
B   8

I tried this , but it didn't help me (I need rows with the key).

I need to solve this in Oracle 11g.

Answer 1

a_horse_with_no_name-s solution would be

 SELECT distinct Key,(level + StartNum)-1 Num
   FROM Table1
  CONNECT BY (LEVEL +StartNum ) <= EndNum+1
  order by Key, Num

Output:

A   1                                     
A   2                                     
A   3                                     
B   6                                     
B   7                                     
B   8                                     

But I'd prefer creating a global temporary table and populate it from plsql, as the above method contains subsequent decarts on the table (thus the distinct required). http://www.dba-oracle.com/t_temporary_tables_sql.htm

Answer 2

Create a store procedure in transact SQL

Create Procedure GetRangeFromTable 
As
Begin 

    create table #Result(           
            code varchar(50),
            num int
    )  

    Declare 
     @code varchar(50),
     @start int ,
     @end int

    DECLARE num_cursor CURSOR FOR Select * from Table1
    OPEN num_cursor

    FETCH NEXT FROM num_cursor 
    INTO @code, @start, @end


    WHILE @@FETCH_STATUS = 0
    BEGIN

        While @start <= @end
        Begin
            Insert into #Result(code,num) Values (@code,@start)
            Set @start= @start + 1
        End 

       FETCH NEXT FROM num_cursor 
       INTO @code, @start, @end

    END

    Select * from #Result

    CLOSE num_cursor
    DEALLOCATE num_cursor

End 

Answer 3

This is a slightly adapted version of Justin's solution posted in: get list of numbers in between two columns

select key, num 
from (
  select distinct t1.key, t1.startnum + level - 1 num, t1.startnum, t1.endnum
  from table1 t1
  connect by level <= (select t2.endnum from table1 t2 where t1.key = t2.key)
) t
where num between t.startnum and t.endnum
order by key, num

I'm not happy with the need for the distinct in the inner query, but I currently don't have the time to dig deeper into this.

Answer 4

Try this,

SELECT t.StartNum , t.StartNum , ROWNUM
FROM Table1 t , ALL_OBJECTS
WHERE ROWNUM between t.StartNum  and t.StartNum