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Added comment about the use of postgis_lib_version in version checker

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git-svn-id: http://svn.osgeo.org/postgis/trunk@2212 b70326c6-7e19-0410-871a-916f4a2858ee
This commit is contained in:
Sandro Santilli 2005-12-16 01:48:52 +00:00
parent 6bb5849741
commit 5df48e3056
1 changed files with 12 additions and 0 deletions
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12
utils/postgis_proc_upgrade.pl
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@ -100,6 +100,18 @@ DECLARE
old_majmin text;
new_majmin text;
BEGIN
--
-- This uses postgis_lib_version() rather then
-- postgis_scripts_installed() as in 1.0 because
-- in the 1.0 => 1.1 transition that would result
-- in an impossible upgrade:
--
-- from 0.3.0 to 1.1.0
--
-- Next releases will still be ok as
-- postgis_lib_version() and postgis_scripts_installed()
-- would both return actual PostGIS release number.
--
SELECT into old_scripts postgis_lib_version();
SELECT into new_scripts ''NEWVERSION'';
SELECT into old_majmin substring(old_scripts from 1 for 4);