pg.ddx.io pgsql-sql@postgresql.org mailing list archive
help / color / mirror / Atom feedmanipulating the POINT data type
2+ messages / 2 participants
[nested] [flat]
* manipulating the POINT data type
@ 2002-08-07 17:16 Floyd Shackelford <floyds@4peakstech.com>
0 siblings, 1 reply; 2+ messages in thread
From: Floyd Shackelford @ 2002-08-07 17:16 UTC (permalink / raw)
To: pgsql-sql
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? can i do something like "select pointa.x" or
"where pointa.x = pointb.x"?
When using JDBC, when i get a POINT value from a result set, what am i
getting? a java.awt.Point or a string?
Regards,
Floyd Shackelford
4 Peaks Technology Group, Inc.
VOICE: 334.735.9428
FAX: 916.404.7125
EMAIL: FloydS@4PeaksTech.com
ICQ #: 161371538
acta non verba
^ permalink raw reply [nested|flat] 2+ messages in thread
* Re: manipulating the POINT data type
@ 2002-08-08 13:35 Tom Lane <tgl@sss.pgh.pa.us>
parent: Floyd Shackelford <floyds@4peakstech.com>
0 siblings, 0 replies; 2+ messages in thread
From: Tom Lane @ 2002-08-08 13:35 UTC (permalink / raw)
To: floyds@4peakstech.com; +Cc: pgsql-sql
"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
^ permalink raw reply [nested|flat] 2+ messages in thread
end of thread, other threads:[~2002-08-08 13:35 UTC | newest]
Thread overview: 2+ messages (download: mbox mbox.gz follow: Atom feed)
-- links below jump to the message on this page --
2002-08-07 17:16 manipulating the POINT data type Floyd Shackelford <floyds@4peakstech.com>
2002-08-08 13:35 ` Tom Lane <tgl@sss.pgh.pa.us>
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox