Re: [GENERAL] pg-dump -- primary Key
I understand this, but does it set the indisprimary flag in the pg_index table? The reason I ask is because I am writing a web based app to administer a pgsql database and am attempting to keep track of the indices/keys. This is the property I am looking at determine whether the index is a primary key. Is there a better property or flag to examine for this purpose? -Dan On Sun, Jul 25, 1999 at 03:13:39PM +1000, Chris Bitmead wrote: Dan Wilson wrote: Yes, I am aware that the primary key does not really mean anything except implicitly making it a unique key, but it's supposed to be there for compatibility and it's not even in the dump. Someone mentioned recently that primary key enforces nulls as unique whereas unique index doesn't. Actually, I belive it enforces NOT NULL on primary keys, which it also dumps in the pg_dump output. Ross
Re: [GENERAL] pg-dump -- primary Key
Dan Wilson wrote: Yes, I am aware that the primary key does not really mean anything except implicitly making it a unique key, but it's supposed to be there for compatibility and it's not even in the dump. Someone mentioned recently that primary key enforces nulls as unique whereas unique index doesn't. It's not a huge deal, but I was wondering if there was reasoning behind it of which I am unaware. -Dan -- Chris Bitmead mailto:[EMAIL PROTECTED] http://www.techphoto.org - Photography News, Stuff that Matters
Re: [GENERAL] pg-dump -- primary Key
On Sun, Jul 25, 1999 at 03:13:39PM +1000, Chris Bitmead wrote: Dan Wilson wrote: Yes, I am aware that the primary key does not really mean anything except implicitly making it a unique key, but it's supposed to be there for compatibility and it's not even in the dump. Someone mentioned recently that primary key enforces nulls as unique whereas unique index doesn't. Actually, I belive it enforces NOT NULL on primary keys, which it also dumps in the pg_dump output. Ross -- Ross J. Reedstrom, Ph.D., [EMAIL PROTECTED] NSBRI Research Scientist/Programmer Computer and Information Technology Institute Rice University, 6100 S. Main St., Houston, TX 77005
