Re: SELECT substring with regex

From: T E Schmitz <mailreg(at)numerixtechnology(dot)de>
To: Rodrigo De Leon <rdeleonp(at)gmail(dot)com>
Cc: pgsql-sql(at)postgresql(dot)org
Subject: Re: SELECT substring with regex
Date: 2006-07-08 09:40:08
Message-ID: 44AF7D78.2050007@numerixtechnology.de
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Rodrigo De Leon wrote:
> On 7/7/06, T E Schmitz <mailreg(at)numerixtechnology(dot)de> wrote:
>
>> Sorry, but that would also capture something like
>> 10-30-59mm
>>
>> The pattern describes either a single length (120 millimeters) or a
>> range (30 to 70 millimetres), hence:
>>
>> \\d+(-\\d+)?mm
>>
>> The ? quantifier refers to the combination of '-' and digits and has to
>> be bracketed.
>>
>> ...
>>
>> Still, I'd be interested to know whether there is a 'more elegant'
>> solution.
>
>
> OK, last try using regex:
>
> SELECT
> NAME
> , substring(NAME, '^(\\d+(-\\d+)?mm)') AS BASE_NAME
> , regexp_replace(NAME, '^\\d+(-\\d+)?mm (.*)', '\\2') AS SUFFIX
> FROM MODEL

Is regexp_replace a new feature?
I am running v 7.4.

--

Regards,

Tarlika

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