Re: Select all invalid e-mail addresses

From: Scott Marlowe <smarlowe(at)g2switchworks(dot)com>
To: Andrus <eetasoft(at)online(dot)ee>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Select all invalid e-mail addresses
Date: 2005-10-25 19:10:21
Message-ID: 1130267421.15546.164.camel@state.g2switchworks.com
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On Tue, 2005-10-25 at 13:01, Andrus wrote:
> >> This regex allows email addresses containing two dots without any
> >> letters,
> >> like eeta(dot)(dot)soft(at)online(dot)ee
> >
> > That's because the regular expression is wrong: it simply checks
> > the local part for zero or more non-@ characters instead of checking
> > against the RFC822/RFC2822 specification. Use a search engine to
> > find a more complete regular expression (beware: it's long).
>
> Michael, thank you.
> I found correct regexp from
> http://www.twilightsoul.com/Domains/Voyager/DeveloperVision/BestPracticesPatterns/EmailAddresses/tabid/134/Default.aspx?PageContentID=2
>
> but this needs to be converted to Postgres. It causes the famuous ERROR:
> invalid regular expression: invalid character range.
> Since text editor find/replace cannot be used to convert it it is probably
> not reasonable to waste time trying to make the following code to work in
> Postgres.
>
> Andrus.

PERL REGEX SNIPPED.

That's because it's a perl regex, not a posix or sql regex. IF you
wrapped it in a plperl function, then you could use it. Anyone know if
the PCRE library can handle this thing? I guess I could try it myself.

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