----- Original Message ----- From: Steve Atkins
To: pgsql-general
Sent: Friday, February 28, 2014 4:17 PM
Subject: Re: [GENERAL] Replacing Ordinal Suffixes



On Feb 28, 2014, at 2:04 PM, George Weaver <gwea...@shaw.ca> wrote:

Hi list,

I'm stumped.

I am trying to use Regexp_Replace to replace ordinal suffixes in addresses (eg have '126th' want '126') for comparison purposes. So far no luck.

I have found that

SELECT REGEXP_REPLACE(LOWER('300 North 126th Street'), '(?!/D)(st|nd|rd|th)', '', 'g');
  regexp_replace
------------------
 300 nor 126 reet

but

SELECT REGEXP_REPLACE(LOWER('300 North 126th Street'), '(?=/D)(st|nd|rd|th)', '', 'g');
     regexp_replace
------------------------
 300 north 126th street

I'm a novice with regular expressions and google hasn't helped much.

Any suggestions?

Maybe this?

select regexp_replace('300 North 126th Street', '(\d+)(?:st|nd|rd|th)', '\1', 'gi');

Hi Steve,

Thanks, but no luck:

select regexp_replace('300 North 126th Street', E'(\d+)(?:st|nd|rd|th)', E'\1', 'gi');
    regexp_replace
------------------------
300 North 126th Street

George

Cheers,
 Steve




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