Re: Extracting hostname from URI column
| От | Paul Lambert |
|---|---|
| Тема | Re: Extracting hostname from URI column |
| Дата | |
| Msg-id | 46E764FB.2070602@autoledgers.com.au обсуждение исходный текст |
| Ответ на | Re: Extracting hostname from URI column (Paul Lambert <paul.lambert@autoledgers.com.au>) |
| Список | 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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