Re: Substring question

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От Tom Lane
Тема Re: Substring question
Дата
Msg-id 27192.1102964964@sss.pgh.pa.us
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Ответ на Re: Substring question  (Michael Fuhr <mike@fuhr.org>)
Список pgsql-general
Michael Fuhr <mike@fuhr.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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