Re: "DELETE FROM" protection

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Yuji Shinozaki <ys2n(at)virginia(dot)edu>
Cc: Dave Ewart <Dave(dot)Ewart(at)cancer(dot)org(dot)uk>, pgsql-admin(at)postgresql(dot)org
Subject: Re: "DELETE FROM" protection
Date: 2004-02-20 18:26:41
Message-ID: 200402201826.i1KIQf606802@candle.pha.pa.us
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Yuji Shinozaki wrote:
>
> I've gotten myself into the habit of always writing out a
>
> SELECT ... FROM ... WHERE ...;
>
> first, and then command-line editing it to
>
> DELETE FROM ... WHERE ...;
>
> Putting it in a transaction (BEGIN, COMMIT or ROLLBACK) is probably the
> best practice.

I used to do this with Informix before a DELETE:

> SELECT COUNT(*) FROM ... WHERE ...;

^^^^^^^^
and Informix had that "Are your sure" check in dbaccess too, but after I
did the COUNT(*), the prompt was just annoying.

Also, what interfaces allow you to just press ENTER to send a command?
With psql, you have to terminate it with a semicolon or nothing happens.

I think there is justification for an "Are you sure" only if a single
keystroke sends the command.

--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
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