[postgis-devel] soft-upgrading extension between SVN revisions

[Sandro Santilli]

How do I soft-upgrade a postgis extension between SVN revisions ?
The simple-and-well-tested postgis_upgrade_20_minor.sql script
fails miserably:

 psql:postgis/postgis_upgrade_20_minor.sql:46: ERROR:  cannot drop function addgeometrycolumn(character varying,character varying,character varying,character varying,integer,character varying,integer,boolean) ...
 ... because extension postgis requires it

--strk;

  ,------o-. 
  |   __/  |    Delivering high quality PostGIS 2.0 !
  |  / 2.0 |    http://strk.keybit.net - http://vizzuality.com
  `-o------'