[postgis-tickets] [PostGIS] #2510: Remove postgis_major_version_check from postgis_upgrade_20_21.sql

[PostGIS]

#2510: Remove postgis_major_version_check from postgis_upgrade_20_21.sql
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 Reporter:  pramsey   |       Owner:  pramsey      
     Type:  defect    |      Status:  new          
 Priority:  critical  |   Milestone:  PostGIS 2.1.1
Component:  postgis   |     Version:  2.1.x        
 Keywords:            |  
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Comment(by strk):

 The idea is to avoid misuse of upgrade scripts. The function could maybe
 be updated to only query for the sql-implemented version of the function,
 or to react to exceptions. But I think it is nice to have some safety net.
 If extensions do this by themselves then fine, but not I think it's less
 safe with extensions: try {{{ CREATE EXTENSION POSTGIS VERSION '2.1.0'
 FROM unpackaged }}} while having 2.0.0 installed and I think you end up
 with a mess.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/2510#comment:1>
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