From: Tom Lane <tgl@sss.pgh.pa.us>
To: floyds@4peakstech.com
Cc: pgsql-sql@postgresql.org
Subject: Re: manipulating the POINT data type
Date: Thu, 08 Aug 2002 09:35:48 -0400
Message-ID: <2702.1028813748@sss.pgh.pa.us> (raw)
In-Reply-To: <NDBBKEGJICMIMJHJEBCOIEDIFHAA.floyds@4peakstech.com>
References: <NDBBKEGJICMIMJHJEBCOIEDIFHAA.floyds@4peakstech.com>
"Floyd Shackelford" <floyds@4peakstech.com> writes:
> how do i manipulate the POINT data type in a select statement? how do i
> reference the X and Y portions of the point? for instance, can i select the
> X or Y portion of a POINT?
Yeah, pretend it's an array with indexes 0,1.
regression=# create table p (f1 point);
CREATE TABLE
regression=# insert into p values('(12,34)');
INSERT 437746 1
regression=# select f1[0] from p;
f1
----
12
(1 row)
regression=# select f1[1] from p;
f1
----
34
(1 row)
regression=# update p set f1[1] = 55;
UPDATE 1
regression=# select * from p;
f1
---------
(12,55)
(1 row)
regression=#
regards, tom lane
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To: pgsql-sql@postgresql.org
Cc: tgl@sss.pgh.pa.us, floyds@4peakstech.com
Subject: Re: manipulating the POINT data type
In-Reply-To: <2702.1028813748@sss.pgh.pa.us>
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