I have a couple of questions regarding outer joins.
- Is there some advantage to using (+) on only certain columns. The
books suggest it must be applied to all columns when using multiple
conditions. If this is the case then surely it's used in the wrong place
and should be used somewhere in the from clause like MS Access. i.e T1
OUTER JOIN T2. As the SQL checker does not complain if a (+) is missing
is it possible to take advantge of the usage to get some ,not so
obvious, functionality.
- OK, why can't you use the OR or IN operator in an outer join. I'm
sure there must be some logical reason in that using it won't do what
you think ( or what I think anyway). I've used the decode to simulate
the OR condition so if its so simple why can't SQL do it. The decode
seems to do what I want so what am I Missing????
Received on Mon Feb 08 1999 - 05:37:30 CST
