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David Rowley 04788ee4c5 Add subquery pullup handling for WindowClause runCondition 
9d9c02ccd added code to allow WindowAgg to take some shortcuts when a
monotonic WindowFunc reached some value that it could never come back
from due to the function's monotonic nature.  That commit added a
runCondition field to WindowClause to store the condition which, when it
becomes false we can start taking shortcuts in nodeWindowAgg.c.

Here we fix an issue where subquery pullups didn't properly update the
runCondition to update the Vars to properly reference the new query level.

Here we also add a missing call to preprocess_expression() for the
WindowClause's runCondtion.  The WindowFuncs in the targetlist will have
had this process done, so we must also do it for the WindowFuncs in the
runCondition so that they can be correctly found in the targetlist
during setrefs.c

Bug: #17709
Reported-by: Alexey Makhmutov
Author: Richard Guo, David Rowley
Discussion: https://postgr.es/m/17709-4f557160e3e8ee9a@postgresql.org
Backpatch-through: 15, where 9d9c02ccd was introduced
2022-12-10 19:27:53 +13:00
config Pre-beta mechanical code beautification. 2022-05-12 15:17:30 -04:00
contrib Fix handling of pending inserts in nodeModifyTable.c. 2022-11-25 17:45:01 +09:00
doc Update MERGE docs to mention that ONLY is supported. 2022-12-09 10:03:04 +00:00
src Add subquery pullup handling for WindowClause runCondition 2022-12-10 19:27:53 +13:00
.cirrus.yml ci: macos: Reduce test concurrency 2022-10-01 16:56:15 -07:00
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configure Stamp 15.1. 2022-11-07 16:36:53 -05:00
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README.git Canonicalize some URLs 2020-02-10 20:47:50 +01:00

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/.