Re: Regular Expression Data Type

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Richard Doust <rdoust(at)mac(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Regular Expression Data Type
Date: 2007-04-21 16:29:57
Message-ID: 24675.1177172997@sss.pgh.pa.us
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Richard Doust <rdoust(at)mac(dot)com> writes:
> What I'd like to be able to do is to define a field in the database
> as a regular expression so that when I select, i.e.,

> select price from shipping_prices where shipFromZip = '23773' and
> shipToZip ~ '87927'

> because shipToZip is defined as a regular expression, I'd match a row
> where shipToZip held the value '879[0-9]{2,2}' or '87[0-9]*'.

I don't see the problem ... you just write a variable instead of a
constant on the right-hand side of ~, no?

How efficient this might be is another question, but it works.

regards, tom lane

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