That's what I was thinking, too. I tried it on 8.1.7.4 and it works the
same way, as I expected. You would need an outer join to get something
back.
Scott Canaan ([EMAIL PROTECTED])
(585) 475-7886
"Life is like a sewer, what you get out of it depends on what you put
into it." - Tom Lehrer.
-----Original Message-----
Carol Bristow
Sent: Friday, December 12, 2003 3:44 PM
To: Multiple recipients of list ORACLE-L
Junk minus junk2 results in no rows, and when you do the implied
cartesian join between view a and view b, joining no rows with one row
gives no rows.
Makes sense to me.
Carol Bristow
DPRA Inc.
1300 N 17th St Suite 950
Rosslyn, VA 22209
Work: 703-841-8025
Fax: 703-524-9415
-----Original Message-----
Sent: Friday, December 12, 2003 3:05 PM
To: Multiple recipients of list ORACLE-L
Hi!
I have a query that I think is behaving oddly; and, it may just be that
I'm
blind and am doing something silly (*there's* a first!), or it may be
environment specific, but, I'm thinkin it may just be a bug. I have
filed a
TAR with Oracle, and they keep sending workarounds, when I told them
from
the start that I've got one, this is only a question of why this query
isn't
working. So, two parts, really... is this query really not working, and
if
so, does anyone have a clue as to why?
We're on 9.2.0.2 on SunOS. The overall issue is easy. I have two
tables.
I want to find the difference in the contents. This is easily
accomplished
by doing
A MINUS B
UNION
B MINUS A
*That's* not the issue. The issue is that if I do this through inlines,
the
query fails. I'll put everything out there so you can just cut and
paste
iffen you wanna...
SQL> create table junk (test char(1));
Table created.
SQL> insert into junk values ('A');
1 row created.
SQL> insert into junk values ('B');
1 row created.
SQL> insert into junk values ('C');
1 row created.
SQL> create table junk2 as select * from junk;
Table created.
SQL> insert into junk2 values ('X');
1 row created.
SQL> select * from junk;
T
-
A
B
C
SQL> select * from junk2;
T
-
A
B
C
X
SQL> select * from junk minus select * from junk2
2 union
3 select * from junk2 minus select * from junk;
T
-
X
SQL> select a.*
2 from
3 ( select * from junk2 minus select * from junk ) a;
T
-
X
SQL> select a.*, b.*
2 from
3 ( select * from junk2 minus select * from junk ) a,
4 ( select * from junk2 minus select * from junk ) b;
T T
- -
X X
SQL> select a.*, b.*
2 from
3 ( select * from junk minus select * from junk2 ) a,
4 ( select * from junk2 minus select * from junk ) b;
no rows selected
Anyone?
Bambi.
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