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Tom Lane c7076ba6ad Refactor predicate_{implied,refuted}_by_simple_clause.
Put the node-type-dependent operations into switches on nodeTag.
This should ease addition of new proof rules for other expression
node types.  There is no functional change, although some tests
are made in a different order than before.

Also, add a couple of new cross-checks in test_predtest.c.

James Coleman (part of a larger patch series)

Discussion: https://postgr.es/m/CAAaqYe8Bo4bf_i6qKj8KBsmHMYXhe3Xt6vOe3OBQnOaf3_XBWg@mail.gmail.com
2024-03-25 17:45:15 -04:00
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contrib Allow planner to use Merge Append to efficiently implement UNION 2024-03-25 14:31:14 +13:00
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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.

Copyright and license information can be found in the file COPYRIGHT.

General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.

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