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Re: select from pipe-delimited field

From: Arjen Nienhuis <a(dot)g(dot)nienhuis(at)gmail(dot)com>
To: san man <neelakash21(at)gmail(dot)com>
Cc: pgsql-general(at)postgresql(dot)org, pgsql-novice(at)postgresql(dot)org
Subject: Re: select from pipe-delimited field
Date: 2010-08-23 22:59:40
Message-ID: AANLkTikHkHuK4mddB33GaztkqEEZrrZiaN0+iz43LEZb@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-generalpgsql-novice
On Tue, Aug 24, 2010 at 12:44 AM, san man <neelakash21(at)gmail(dot)com> wrote:

> Hello all,
>
> I am trying to do a SELECT operation with a WHERE condition. However, the
> column with which I am trying to do the comparison has several values which
> are pipe-delimited. I want to return a match(true) if the WHERE condition
> matches any of the bar-delimited values.
>
> For example, SELECT id WHERE synonyms = 'word';
>
> Here synonyms is a pipe-delimited field and I want to match "word" with any
> of the values of the synonyms fields.
>
>
SELECT id FROM t WHERE 'word' = ANY(regexp_split_to_array(synonyms, '[|]'));

With postgres it's possible to make an index
on regexp_split_to_array(synonyms, '[|]')) for some extra speed. But its
better to store the synonyms as an array in the first place.

Thanks in advance.
>
> Neel
>

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