From: | christian <crr(at)freemail(dot)com(dot)br> |
---|---|
To: | "Jackson, DeJuan" <djackson(at)cpsgroup(dot)com> |
Cc: | pgsql-general(at)postgreSQL(dot)org |
Subject: | RE: [GENERAL] Relations between tables. |
Date: | 1999-05-21 21:05:43 |
Message-ID: | Pine.LNX.4.10.9905211800120.1571-100000@violinux.apocalypse.now |
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Thread: | |
Lists: | pgsql-general |
On Thu, 20 May 1999, Jackson, DeJuan wrote:
> Not in and of itself. The FOREIGN KEY CONSTRAINT syntax is parsed but not
> implemented.
Are there plans for this _important feature_ :) being implemented?
> > MS Access has to be a poor example but I've seen tables relationed between
> > themselves.
> MS Access is a very poor example of most things SQL92.
Okay, okay, forget access. I knew I was going to draw flames on this
comparison.
> Nope this doesn't even happen in <omitted>. If you build your query
> in <omitted> and look at the SQL (go to the View menu the select SQL)
> that's generated you'll see that all <omitted> is put that part of the
> WHERE clause in for you. Most other databases aren't that
> presumptuous.
You're right. The constraint is simply a constraint - rows in this table
must have a key listed in the column/table referred to in the Primary Key.
Correct?
cr
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