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3decd150a2
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Tom Lane 3decd150a2 Teach eval_const_expressions() to handle some more cases. 
Add some infrastructure (mostly macros) to make it easier to write
typical cases for constant-expression simplification.  Add simplification
processing for ArrayRef, RowExpr, and ScalarArrayOpExpr node types,
which formerly went unsimplified even if all their inputs were constants.
Also teach it to simplify FieldSelect from a composite constant.
Make use of the new infrastructure to reduce the amount of code needed
for the existing ArrayExpr and ArrayCoerceExpr cases.

One existing test case changes output as a result of the fact that
RowExpr can now be folded to a constant.  All the new code is exercised
by existing test cases according to gcov, so I feel no need to add
additional tests.

Tom Lane, reviewed by Dmitry Dolgov

Discussion: https://postgr.es/m/3be3b82c-e29c-b674-2163-bf47d98817b1@iki.fi
2018-01-03 12:35:09 -05:00
config Try harder to detect unavailability of __builtin_mul_overflow(int64). 2017-12-17 11:52:22 -05:00
contrib Update copyright for 2018 2018-01-02 23:30:12 -05:00
doc Allow ldaps when using ldap authentication 2018-01-03 10:11:26 -05:00
src Teach eval_const_expressions() to handle some more cases. 2018-01-03 12:35:09 -05:00
.dir-locals.el
.gitattributes
.gitignore Add lcov --initial 2017-09-29 08:54:34 -04:00
aclocal.m4 Make configure check for IPC::Run when --enable-tap-tests is specified. 2017-06-15 15:56:12 -04:00
configure Allow ldaps when using ldap authentication 2018-01-03 10:11:26 -05:00
configure.in Allow ldaps when using ldap authentication 2018-01-03 10:11:26 -05:00
COPYRIGHT Update copyright for 2018 2018-01-02 23:30:12 -05:00
GNUmakefile.in
HISTORY Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
Makefile Fix non-GNU makefiles for AIX make. 2017-11-30 00:57:22 -08:00
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/.