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Tom Lane 376ac922df Rethink the dependencies recorded for FieldSelect/FieldStore nodes. 
On closer investigation, commits f3ea3e3e8 et al were a few bricks
shy of a load.  What we need is not so much to lock down the result
type of a FieldSelect, as to lock down the existence of the column
it's trying to extract.  Otherwise, we can break it by dropping that
column.  The dependency on the result type is then held indirectly
through the column, and doesn't need to be recorded explicitly.

Out of paranoia, I left in the code to record a dependency on the
result type, but it's used only if we can't identify the pg_class OID
for the column.  That shouldn't ever happen right now, AFAICS, but
it seems possible that in future the input node could be marked as
being of type RECORD rather than some specific composite type.

Likewise for FieldStore.

Like the previous patch, back-patch to all supported branches.

Discussion: https://postgr.es/m/22571.1509064146@sss.pgh.pa.us
2017-10-27 12:18:57 -04:00
config Absorb -D_USE_32BIT_TIME_T switch from Perl, if relevant. 2017-08-14 11:48:59 -04:00
contrib Fix crash when logical decoding is invoked from a PL function. 2017-10-06 19:18:59 -04:00
doc Doc: mention that you can't PREPARE TRANSACTION after NOTIFY. 2017-10-27 10:46:06 -04:00
src Rethink the dependencies recorded for FieldSelect/FieldStore nodes. 2017-10-27 12:18:57 -04:00
.dir-locals.el Update Emacs configuration 2013-08-13 20:08:44 -04:00
.gitattributes gitattributes: Ignore time zone data files for whitespace checks 2014-07-22 00:12:28 -04:00
.gitignore Add /config.cache to .gitignore in back branches 2017-02-25 13:04:22 -05:00
aclocal.m4 Remove cvs keywords from all files. 2010-09-20 22:08:53 +02:00
configure Avoid SIGBUS on Linux when a DSM memory request overruns tmpfs. 2017-09-25 16:09:20 -04:00
configure.in Avoid SIGBUS on Linux when a DSM memory request overruns tmpfs. 2017-09-25 16:09:20 -04:00
COPYRIGHT Update copyright for 2017 2017-01-03 12:37:53 -05:00
GNUmakefile.in Add TAP tests for client programs 2014-04-14 21:33:46 -04:00
HISTORY Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
Makefile Allow make check in PL directories 2011-02-15 06:52:12 +02:00
README Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
README.git Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00

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:

	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/.