produce a series of numbers to select from the shortcomings of the ID column
(1)Suppose I have a table t that contains lines like this:
A AND B
---------- ----------
2 4
6 7
I would like to use select to produce lines with numbers between a column and column B included
for each line, like this:
Select from t...
2
3
4
6
7
(2)
Suppose I have the ID column that is lacking, I want to get the lowest < N > numbers available between the gaps.
I did some research and I can find the range of gaps, but I can't get the numbers listed separately, therefore
I ask the question (1). But is there a direct way for the list instead of going through beaches and the list.
For example, I have the ID column that has
2
5
6
7
9
2000000
I would get a select query that produces
Select...
3
4
8
10
11
I have a way to get a list of 2 to 2000000, then less than what we need to get all the
numbers of the gap, but who is not effective and may is short-term memory.
PS: before I post on this group, I did some research already on "connect by", with recursive queries.
PuraVidaOTN wrote:
I would like to use select to produce lines with numbers between a column and column B included
for each line, like this:
Assuming that no duplicates in the table...
with t as
(
select 2 c1,4 c2 from dual union all
select 6 c1,7 c2 from dual
)
select c1,c2,c1+level-1 c
from t
connect by c1+level-1 <= c2
and prior c1 = c1
and prior c2 = c2
and prior sys_guid() is not null;
C1 C2 C
-- -- -
2 4 2
2 4 3
2 4 4
6 7 6
6 7 7
Suppose I have the ID column that is lacking, I want to get the lowest
numbers between the gaps.
I did some research and I can find the range of gaps, but I can't get the numbers listed separately, therefore
I ask the question (1). But is there a direct way for the list instead of going through beaches and the list.
I have a way to get a list of 2 to 2000000, then less than what we need to get all the
numbers of the gap, but who is not effective and may is short-term memory.
It's the best way in my opinion...
Or rather less, you can try outer join...
Published by: JAC on December 19, 2012 21:28
Tags: Database
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