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Commit f49bcd4ef3 disallowed postgres_fdw to import table partitions. Because all data can be accessed through the partitioned table which is the root of the partitioning hierarchy, importing only partitioned table should allow access to all the data without creating extra objects. This is a reasonable default when importing a whole schema. But there may be the case where users want to explicitly import one of a partitioned tables' partitions. For that use case, this commit allows postgres_fdw to import tables or foreign tables which are partitions of some other table only when they are explicitly specified in LIMIT TO clause. It doesn't change the behavior that any partitions not specified in LIMIT TO are automatically excluded in IMPORT FOREIGN SCHEMA command. Author: Matthias van de Meent Reviewed-by: Bernd Helmle, Amit Langote, Michael Paquier, Fujii Masao Discussion: https://postgr.es/m/CAEze2Whwg4i=mzApMe+PXxCEfgoZmHGqdqQFW7J4bmj_5p6t1A@mail.gmail.com
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.