| From: | Paul Lambert <paul(dot)lambert(at)autoledgers(dot)com(dot)au> | 
|---|---|
| To: | pgsql-sql(at)postgresql(dot)org | 
| Subject: | Re: Extracting hostname from URI column | 
| Date: | 2007-09-12 04:03:07 | 
| Message-ID: | 46E764FB.2070602@autoledgers.com.au | 
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| Lists: | pgsql-sql | 
Paul Lambert wrote:
> 
> Just use distinct...
> 
> test=# select distinct count(*),substring( href from '.*://([^/]*)' ) as 
> domain from url group by domain order by domain;
OK so distinct was redundant there... it gives the same results without it.
AutoDRS=# select count(*) as occurances,substring( href from 
'.*://([^/]*)' ) as domain from url group by domain order by occurances 
desc,domain;
  occurances |          domain
------------+--------------------------
          11 | www.google.com
           4 | dictionary.reference.com
           4 | texturizer.net
           3 | devedge.netscape.com
           3 | groups.google.com
           2 | forums.mozillazine.org
           2 | www.mozillazine.org
(7 rows)
-- 
Paul Lambert
Database Administrator
AutoLedgers
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