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08ea7a2291
This reverts commitsd204ef6377,83454e3c2band a few more commits thereafter (complete list at the end) related to MERGE feature. While the feature was fully functional, with sufficient test coverage and necessary documentation, it was felt that some parts of the executor and parse-analyzer can use a different design and it wasn't possible to do that in the available time. So it was decided to revert the patch for PG11 and retry again in the future. Thanks again to all reviewers and bug reporters. List of commits reverted, in reverse chronological order:f1464c5380Improve parse representation for MERGEddb4158579MERGE syntax diagram correction530e69e59bAllow cpluspluscheck to pass by renaming variable01b88b4df5MERGE minor errata3af7b2b0d4MERGE fix variable warning in non-assert buildsa5d86181ecMERGE INSERT allows only one VALUES clause4b2d44031fMERGE post-commit review4923550c20Tab completion for MERGEaa3faa3c7aWITH support in MERGE83454e3c2bNew files for MERGEd204ef6377MERGE SQL Command following SQL:2016 Author: Pavan Deolasee Reviewed-by: Michael Paquier
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.