From: Joe Conway <mail@joeconway.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: David <de4@kent.ac.uk>
Cc: pgsql-sql@postgresql.org
Subject: Re: arrays and polygons
Date: Fri, 13 Feb 2004 08:33:42 -0800
Message-ID: <402CFC66.5060707@joeconway.com> (raw)
In-Reply-To: <2252.1076684559@sss.pgh.pa.us>
References: <001e01c3f21b$a8c0eb00$2d650c81@ad.kent.ac.uk>
<2252.1076684559@sss.pgh.pa.us>
Tom Lane wrote:
> "David" <de4@kent.ac.uk> writes:
>>INSERT INTO species (location) VALUES ('{((432,89), (45,87), (89,87)),
>>((54,78), (34,98))};
>
> I think you'd need to double-quote each polygon within the array
> literal.
>
> '{"((432,89), (45,87), (89,87))", "..."}'
>
> The array parser doesn't think parens are special, so it's not going to
> magically distinguish array commas from polygon commas for you.
>
> BTW, if you are using 7.4, the ARRAY[] constructor syntax might be
> easier to use.
FWIW, here's what it would look like in 7.4.x:
regression=# select ARRAY['((432,89), (45,87), (89,87))'::polygon,
'((432,89), (45,87), (89,87))'];
array
-------------------------------------------------------------
{"((432,89),(45,87),(89,87))","((432,89),(45,87),(89,87))"}
(1 row)
You need to explicitly cast at least the first polygon in order to get
an array of polygons (versus an array of text).
HTH,
Joe
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To: pgsql-sql@postgresql.org
Cc: mail@joeconway.com, tgl@sss.pgh.pa.us, de4@kent.ac.uk
Subject: Re: arrays and polygons
In-Reply-To: <402CFC66.5060707@joeconway.com>
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