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help / color / mirror / Atom feedFrom: Bruce Momjian <[email protected]>
To: Joe Conway <[email protected]>
Cc: Tom Lane <[email protected]>
Cc: PostgreSQL Patches <[email protected]>
Subject: Re: LIKE ESCAPE doc fix (was Re: [DOCS] functions-matching
Date: Wed, 21 Aug 2002 12:09:19 -0400 (EDT)
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
Your patch has been added to the PostgreSQL unapplied patches list at:
http://candle.pha.pa.us/cgi-bin/pgpatches
I will try to apply it within the next 48 hours.
---------------------------------------------------------------------------
Joe Conway wrote:
> Tom Lane wrote:
> > Joe Conway <[email protected]> writes:
> >
> >>7.2.1 docs:
> >>http://www.postgresql.org/idocs/index.php?functions-matching.html#FUNCTIONS-LIKE
> >
> >
> >>" It's also possible to select no escape character by writing ESCAPE ''.
> >>In this case there is no way to turn off the special meaning of
> >>underscore and percent signs in the pattern."
> >
> >
> >>7.3 development docs:
> >>http://developer.postgresql.org/docs/postgres/functions-matching.html#FUNCTIONS-LIKE
> >
> >
> >>" It's also possible to select no escape character by writing ESCAPE ''.
> >>This effectively disables the escape mechanism and turns off the special
> >>meaning of underscore and percent signs in the pattern."
> >
> >
> >>I think the former is still correct, isn't it?
> >
> >
> > Yes, as is easily proven by experiment:
> >
> > regression=# select 'foo' LIKE 'f%';
> > ?column?
> > ----------
> > t
> > (1 row)
> >
> > regression=# select 'foo' LIKE 'f%' escape '';
> > ?column?
> > ----------
> > t
> > (1 row)
> >
> > Who put that change in?
>
> Here's a small doc patch to fix this issue. Please apply.
>
> Thanks,
>
> Joe
>
> Index: doc/src/sgml/func.sgml
> ===================================================================
> RCS file: /opt/src/cvs/pgsql-server/doc/src/sgml/func.sgml,v
> retrieving revision 1.114
> diff -c -r1.114 func.sgml
> *** doc/src/sgml/func.sgml 21 Aug 2002 05:25:49 -0000 1.114
> --- doc/src/sgml/func.sgml 21 Aug 2002 05:42:49 -0000
> ***************
> *** 2238,2246 ****
> <para>
> It's also possible to select no escape character by writing
> <literal>ESCAPE ''</literal>. This effectively disables the
> ! escape mechanism and
> ! turns off the special meaning of underscore and percent signs in
> ! the pattern.
> </para>
>
> <para>
> --- 2238,2245 ----
> <para>
> It's also possible to select no escape character by writing
> <literal>ESCAPE ''</literal>. This effectively disables the
> ! escape mechanism, which makes it impossible to turn off the
> ! special meaning of underscore and percent signs in the pattern.
> </para>
>
> <para>
>
> ---------------------------(end of broadcast)---------------------------
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--
Bruce Momjian | http://candle.pha.pa.us
[email protected] | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073
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Subject: Re: LIKE ESCAPE doc fix (was Re: [DOCS] functions-matching
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