The SQL-MM specification has ST_ as a prefix to all spatial funcionality (types, functions), and the newer PostGIS functions will follow that spec...
On 11-09-2007 02:42, "Stephen Woodbridge" <[EMAIL PROTECTED]> wrote: > This is all I could find: > > Log: > Added versions of functions with standard ST (Spatial Type) prefixes to > any functions that were lacking them. Updated the regression tests to > include the new functions. > > > Richard Greenwood wrote: >> I'm embarrassed to ask, but what does "ST" stand for? >> >> Rich >> >> >> >> >> >> >> >> >> >> On 9/10/07, Obe, Regina <[EMAIL PROTECTED]> wrote: >>> >>> >>> Steve, >>> >>> Just to add to what Mark said. There is a little bit more going on than >>> simply a renaming. >>> >>> Most if not all of the ST relation functions have automatic index use >>> enabled in them. >>> >>> For example >>> >>> the old within is really closer to the hidden _ST_Within and the new >>> ST_Within function is equivalent to writing the old >>> >>> geom1 && geom2 AND Within(geom1, geom2) >>> >>> Same goes for ST_Contains, ST_Overlap etc. >>> >>> Hope that helps, >>> Regina >>> >>> ________________________________ >>> From: [EMAIL PROTECTED] on >>> behalf of Mark Cave-Ayland >>> Sent: Sun 9/9/2007 4:30 PM >>> To: PostGIS Users Discussion >>> Subject: Re: [postgis-users] ST_<function> vs <function> >>> >>> >>> >>> >>> On Sun, 2007-09-09 at 16:03 -0400, Stephen Woodbridge wrote: >>>> Hi all, >>>> >>>> I seem to have missed reading some vital post or something. >>>> >>>> What is the difference between ST_<function>() and <function>()? >>>> Is this just a renaming for namespace issues? >>>> Are the <function>() names deprecated? >>>> Are there other benefits to this renaming? >>>> >>>> Please explain or point me to the relevant docs. >>>> >>>> Thanks, >>>> -Steve >>> >>> Hi Stephen, >>> >>> I don't remember there being much discussion about this, but the >>> relevant commit can be found here: >>> http://postgis.refractions.net/pipermail/postgis-commits/2007-June/000074.ht >>> ml. >>> In short, the old function names are deprecated, and new applications should >>> start to use the ST_ prefix functions instead. >>> >>> >>> ATB, >>> >>> Mark. >>> >>> -- >>> ILande - Open Source Consultancy >>> http://www.ilande.co.uk >>> >>> >>> _______________________________________________ >>> postgis-users mailing list >>> [email protected] >>> http://postgis.refractions.net/mailman/listinfo/postgis-users >>> >>> >>> >>> ________________________________ >>> >>> >>> >>> >>> The substance of this message, including any attachments, may be >>> confidential, legally privileged and/or exempt from disclosure pursuant to >>> Massachusetts law. It is intended solely for the addressee. If you received >>> this in error, please contact the sender and delete the material from any >>> computer. >>> _______________________________________________ >>> postgis-users mailing list >>> [email protected] >>> http://postgis.refractions.net/mailman/listinfo/postgis-users >>> >>> >> >> > > _______________________________________________ > postgis-users mailing list > [email protected] > http://postgis.refractions.net/mailman/listinfo/postgis-users _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
