Re: How do I run a search on array

From: Stephan Szabo <sszabo(at)megazone23(dot)bigpanda(dot)com>
To: Indraneel Majumdar <indraneel(at)www(dot)cdfd(dot)org(dot)in>
Cc: pgsql-sql(at)postgresql(dot)org
Subject: Re: How do I run a search on array
Date: 2000-09-21 04:02:27
Message-ID: Pine.BSF.4.10.10009202059460.59740-100000@megazone23.bigpanda.com
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On Thu, 21 Sep 2000, Indraneel Majumdar wrote:

> select col1 from table while array_col[1][1:4]='2';
>
> how do I do this sort of thing? There seems to be no docs ;-(
>
> my array is {{"1","2","4","2"},{"3","2","5"},{"6","3","7","9"}}

You'll want to check out the array utilities in the contrib directory.
They include element is member of array and other such functions and
will probably do what you need.

> I would also like to know that if I have an array as a large object, is it
> possible to do a search on it using rows and columns (or by any other
> way)?
You're putting array style data into a large object with the lo_
functions? Probably not in a meaningful way, no (although I'd guess that
toast might work for that kind of application when 7.1 comes out.)

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