From: | Stephan Szabo <sszabo(at)megazone(dot)bigpanda(dot)com> |
---|---|
To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
Cc: | Robert Treat <xzilla(at)users(dot)sourceforge(dot)net>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, <shridhar_daithankar(at)persistent(dot)co(dot)in>, <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: "truncate all"? |
Date: | 2003-08-17 04:39:15 |
Message-ID: | 20030816213700.S77393-100000@megazone.bigpanda.com |
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Thread: | |
Lists: | pgsql-hackers |
On Sun, 17 Aug 2003, Bruce Momjian wrote:
> Is this a bug?
I don't think so. I'd say this is the expected behavior. Part of the
point is that it fails without checking for matching rows.
> Robert Treat wrote:
> > On Mon, 2003-08-04 at 12:19, Tom Lane wrote:
> > > Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> > > > This this a TODO? Keep in mind if we follow the syntax of VACUUM and
> > > > (7.4) CLUSTER, that the all-database truncate would just be "TRUNACATE".
> > > > That seems very risky to me. I wonder if the risk is worth adding this
> > > > feature.
> > >
> > > I wouldn't care for that either. The prior suggestion of "TRUNCATE tab
> > > CASCADE" (to truncate any tables with FK dependencies on the original
> > > target, instead of failing) seems more reasonable.
> > >
> >
> > Actually there seems to be an ancillary issue here:
> >
> > 21809=# truncate exception;
> > ERROR: TRUNCATE cannot be used as table exception_notice_map references
> > this one via foreign key constraint $1
> > 21809=# TRUNCATE exception_notice_map ;
> > TRUNCATE TABLE
> > 21809=# truncate exception;
> > ERROR: TRUNCATE cannot be used as table exception_notice_map references
> > this one via foreign key constraint $1
> > 21809=# select count(*) from exception_notice_map;
> > count
> > -------
> > 0
> > (1 row)
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