| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Michael Fuhr <mike(at)fuhr(dot)org> |
| Cc: | Adam Witney <awitney(at)sghms(dot)ac(dot)uk>, pgsql-general <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: Substring question |
| Date: | 2004-12-13 19:09:24 |
| Message-ID: | 27192.1102964964@sss.pgh.pa.us |
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| Lists: | pgsql-general |
Michael Fuhr <mike(at)fuhr(dot)org> writes:
> On Mon, Dec 13, 2004 at 06:17:27PM +0000, Adam Witney wrote:
>> I would like to be able to select like this (this is a regular expression I
>> would do in perl)
> Remember that the backslash (\) already has a special meaning in
> PostgreSQL string literals. To write a pattern constant that
> contains a backslash, you must write two backslashes in the
> statement.
> Is that what you're after?
Also, our regular expression engine is based on Tcl's, which has some
subtle differences from Perl's. I believe this particular regexp
would act the same in both, but if you are a regexp guru you might
run into things that act differently.
regards, tom lane
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