From: Asli Akarsakarya <asliakar@yahoo.com>
To: Filip Rembiałkowski <plk.zuber@gmail.com>
Cc: \"pgsql-sql@postgresql.org\" <pgsql-sql@postgresql.org>
Subject: Re: a spatial table's bounding box
Date: Tue, 4 Oct 2011 11:22:19 -0700 (PDT)
Message-ID: <1317752539.52809.YahooMailNeo@web45104.mail.sp1.yahoo.com> (raw)
Thank you very much.
>I would try >SELECT st_envelope( st_collect(geom) ) FROM roads; >HTH, Filip>> I want to get the extensions of spatial table. Say that there is a spatial table named 'roads', and a some road geometry inside. I want to fetch the bounding box (envelope or extension) for that table, that means for all the roads that it has.>>
>> According the OGC specification, this should be defined in the "geometry_columns" table. As four columns, "minX", "minY", "maxX" and "maxY". But I couldn't find it anywhere on my postgis. Yet.
>>
>> From which table/view? With what SQL?
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To: pgsql-sql@postgresql.org
Cc: asliakar@yahoo.com, plk.zuber@gmail.com
Subject: Re: a spatial table's bounding box
In-Reply-To: <1317752539.52809.YahooMailNeo@web45104.mail.sp1.yahoo.com>
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