On Mar 29, 2009, at 10:04 AM, Michael Black wrote:
First, I am relatively new to postgres, but have been using database
(design not administering) for about 20 years (you would think that
I could figure this out - lol). At an rate, I am trying to create
tables that have forgein keys via a script. What happens is if the
table that is referred to in the forgeing key does not exist, the
table fails to create. Undertandable. So what I need to do is
create all the tables and then go back and alter the tables by
adding the forgein key constraint. I got that. But what I am
looking for is the correct syntax to add the forgein key constrant.
I have tried "ALTER TABLE <name> CONSTRANT <constraint description>"
and "ALTER TABLE <name> ADD CONSTRANT <constraint description>".
But both fail.
Yes I am being lazy. I should go through the script and create the
tables that are referenced first then the ones with the forgein
key. But I also need to know this in the even the schema changes in
the future and more constratins are necessary. I have looked at the
ALTER TABLE syntax on postgres but it refers back to the CREATE
TABLE function.
Michael
Michael,
you are looking for this :
http://www.postgresql.org/docs/current/static/sql-altertable.html
Ries
