Can I swap data columns in SQLLDR

Question

Hello,
I'm new to Oracle and have the following problem: I need to import CVS into my database. I use sqlldr. Works fine so far. But now I want to change the data order of columns in condition to their values.
E.g:
CSV:
ColA;ColB
1;2
1;3
5;2
8;1
Needs to be inserted in a table. But I want to load it so that value in column A is always less than value in column B, otherwise swap it.
Result should look like
1;2
1;3
2;5
1;8
Is this possible with sqlldr? And if, how?
Thank's in advance for any help.
Haiko

Answer 1

Andy Klock wrote:
You are going to love external tables.
See here for examples:
http://www.adp-gmbh.ch/ora/misc/ext_table.html
Then you can do an insert with a case statement:
-- untested psuedocode
insert into dest_table
SELECT
(CASE A < B THEN A 
ELSE B
END ) A,
(CASE B > A THEN B 
ELSE A
END )
FROM ext_tab; Or something like that.
Edited by: Andy Klock on May 12, 2010 5:37 AM -- added code tagsOr even
insert into dest_table
SELECT LEAST(A,B), GREATEST(A,B)
FROM ext_tab;