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7012b132d0
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Robert Haas 7012b132d0 postgres_fdw: Push down aggregates to remote servers. 
Now that the upper planner uses paths, and now that we have proper hooks
to inject paths into the upper planning process, it's possible for
foreign data wrappers to arrange to push aggregates to the remote side
instead of fetching all of the rows and aggregating them locally.  This
figures to be a massive win for performance, so teach postgres_fdw to
do it.

Jeevan Chalke and Ashutosh Bapat.  Reviewed by Ashutosh Bapat with
additional testing by Prabhat Sahu.  Various mostly cosmetic changes
by me.
2016-10-21 09:54:29 -04:00
config Fix python shlib probe for Cygwin. 2016-10-07 11:27:34 -04:00
contrib postgres_fdw: Push down aggregates to remote servers. 2016-10-21 09:54:29 -04:00
doc Rename "pg_xlog" directory to "pg_wal". 2016-10-20 11:32:18 -04:00
src postgres_fdw: Push down aggregates to remote servers. 2016-10-21 09:54:29 -04:00
.dir-locals.el emacs: Set indent-tabs-mode in perl-mode 2015-04-12 23:53:23 -04:00
.gitattributes Fix whitespace and remove obsolete gitattributes entry 2016-03-13 16:03:13 -04:00
.gitignore Allow .so minor version numbers above 9 in .gitignore. 2016-08-15 17:35:35 -04:00
aclocal.m4 Replace our hacked version of ax_pthread.m4 with latest upstream version. 2015-07-08 20:36:06 +03:00
configure Remove "sco" and "unixware" ports. 2016-10-11 11:26:04 -04:00
configure.in Remove "sco" and "unixware" ports. 2016-10-11 11:26:04 -04:00
COPYRIGHT Update copyright for 2016 2016-01-02 13:33:40 -05:00
GNUmakefile.in Have "make coverage" recurse into contrib as well 2016-09-05 18:44:36 -03:00
HISTORY
Makefile
README
README.git

README 

PostgreSQL Database Management System
=====================================

This directory contains the source code distribution of the PostgreSQL
database management system.

PostgreSQL is an advanced object-relational database management system
that supports an extended subset of the SQL standard, including
transactions, foreign keys, subqueries, triggers, user-defined types
and functions.  This distribution also contains C language bindings.

PostgreSQL has many language interfaces, many of which are listed here:

	http://www.postgresql.org/download

See the file INSTALL for instructions on how to build and install
PostgreSQL.  That file also lists supported operating systems and
hardware platforms and contains information regarding any other
software packages that are required to build or run the PostgreSQL
system.  Copyright and license information can be found in the
file COPYRIGHT.  A comprehensive documentation set is included in this
distribution; it can be read as described in the installation
instructions.

The latest version of this software may be obtained at
http://www.postgresql.org/download/.  For more information look at our
web site located at http://www.postgresql.org/.