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AND, OR, or equivalent clauses: if there are too many (more than 100) just exit without proving anything. This ensures that we don't spend O(N^2) time trying (and most likely failing) to prove anything about very long IN lists and similar cases. Also, install a couple of CHECK_FOR_INTERRUPTS calls to ensure that a long proof attempt can be interrupted. Per gripe from Sergey Konoplev. Back-patch the whole patch to 8.2 and just the CHECK_FOR_INTERRUPTS addition to 8.1. (The rest of the patch doesn't apply cleanly, and since 8.1 doesn't show the complained-of behavior anyway, it doesn't seem necessary to work hard on it.)
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: http://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. Changes between all PostgreSQL releases are recorded in the file HISTORY. 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 http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.