Victor,
>> You don't need it. Primary key on that 2 columns will create a unique index
>> on them. Of course, if you left things unchanged - you'll need to create
>> business_people index yourself.
Ahh of course ..
"I see said the blind man !" ..
Thanks heaps.
I think now it's pretty clear to me.
I feel I have pretty much optimised my code / sql schema.
Thank you both,
it's a tremendous help - one learns something every day with this list.
Kind regards
Rudi.
Victor Yegorov wrote:
* Rudi Starcevic <rudi@oasis.net.au> [15.05.2003 05:15]:
Perhaps I also need a 3rd Index ?
One for Business's
One for People and
One for Business_People.
I think I may need the 3rd Index for query's like
You don't need it. Primary key on that 2 columns will create a unique index
on them. Of course, if you left things unchanged - you'll need to create
business_people index yourself.
execute:
=> \d business_people
and take a glance on a line, describing primary key.