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fe5e3fce79
That script is incorrect in that it sets the combine function for max(citext) twice instead of setting the combine function for max(citext) once and the combine functon for min(citext) once. The consequence is that if you install 1.0 or 1.1 and then update to 1.2, you end up with min(citext) not having a combine function, contrary to what was intended. If you install 1.2 directly, you're OK. Fix things up by defining a new 1.3 version. Upgrading from 1.2 to 1.3 won't change anything for people who first installed the 1.2 version, but people upgrading from 1.0 or 1.1 will get the right catalog contents once they reach 1.3. Report and patch by David Rowley, reviewed by Andreas Karlsson.
The PostgreSQL contrib tree
---------------------------
This subtree contains porting tools, analysis utilities, and plug-in
features that are not part of the core PostgreSQL system, mainly
because they address a limited audience or are too experimental to be
part of the main source tree. This does not preclude their
usefulness.
User documentation for each module appears in the main SGML
documentation.
When building from the source distribution, these modules are not
built automatically, unless you build the "world" target. You can
also build and install them all by running "make all" and "make
install" in this directory; or to build and install just one selected
module, do the same in that module's subdirectory.
Some directories supply new user-defined functions, operators, or
types. To make use of one of these modules, after you have installed
the code you need to register the new SQL objects in the database
system by executing a CREATE EXTENSION command. In a fresh database,
you can simply do
CREATE EXTENSION module_name;
See the PostgreSQL documentation for more information about this
procedure.