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Tom Lane 9a85860e12 Fix handling of "Subplans Removed" field in EXPLAIN output.
Commit 499be013d added this field in a rather poorly-thought-through
manner, with the result being that rather than being a field of the
Append or MergeAppend plan node as intended (and as it seems to be,
in text format), it was actually an element of the "Plans" subgroup.
At least in JSON format, that's flat out invalid syntax, because
"Plans" is an array not an object.

While it's not hard to move the generation of the field so that it
appears where it's supposed to, this does result in a visible change
in field order in text format, in cases where a Append or MergeAppend
plan node has any InitPlans attached.  That's slightly annoying to
do in stable branches; but the alternative of continuing to emit
broken non-text formats seems worse.

Also, since the set of fields emitted is not supposed to be
data-dependent in non-text formats, make sure that "Subplans Removed"
appears in Append and MergeAppend nodes even when it's zero, in those
formats.  (The previous coding made it look like it could appear in
some other node types such as BitmapAnd, but we don't actually support
runtime pruning there, so don't emit it in those cases.)

Per bug #16171 from Mahadevan Ramachandran.  Fix by Daniel Gustafsson
and Tom Lane, reviewed by Hamid Akhtar.  Back-patch to v11 where this
code came in.

Discussion: https://postgr.es/m/16171-b72259ab75505fa2@postgresql.org
2020-02-04 13:07:13 -05:00
config Update config.guess and config.sub 2019-04-27 14:25:00 +02:00
contrib In jsonb_plpython.c, suppress warning message from gcc 10. 2020-01-30 18:26:13 -05:00
doc Fix slot data persistency when advancing physical replication slots 2020-01-30 11:15:28 +09:00
src Fix handling of "Subplans Removed" field in EXPLAIN output. 2020-02-04 13:07:13 -05:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.gitattributes Add XSL stylesheet to fix up SVG files 2019-06-19 21:26:42 +02:00
.gitignore Support for optimizing and emitting code in LLVM JIT provider. 2018-03-22 11:05:22 -07:00
aclocal.m4 Fix configure's AC_CHECK_DECLS tests to work correctly with clang. 2018-11-19 12:01:47 -05:00
configure Fix handling of OpenSSL's SSL_clear_options 2019-12-06 15:14:26 +09:00
configure.in Fix handling of OpenSSL's SSL_clear_options 2019-12-06 15:14:26 +09:00
COPYRIGHT Update copyrights for 2020 2020-01-01 12:21:45 -05:00
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HISTORY Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
Makefile Don't unset MAKEFLAGS in non-GNU Makefile. 2019-06-25 09:36:21 +12:00
README Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
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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:

	https://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
https://www.postgresql.org/download/.  For more information look at our
web site located at https://www.postgresql.org/.