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94fec48516
postgres_fdw does not support two-phase transactions, so let's add a small negative test case to check after it. Note that this is checked using an end-of-xact callback to ensure a proper connection cleanup with the foreign server, which is called before checking if a server is able to handle 2PC with max_prepared_xacts, so this test does not need an alternate output file. Author: Gilles Darold Discussion: https://postgr.es/m/20191108090507.GC1768@paquier.xyz
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.