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is applied last, after other constraints such as name patterns. This is useful first because the pg_foo_is_visible() functions are relatively expensive, and second because it minimizes the prospects for race conditions. The change is fragile though since it makes unwarranted assumptions about planner behavior, ie, that WHERE clauses will be executed in the original order if there's not reason to change it. This should fix ... or at least hide ... an intermittent failure in the prepared_xacts regression test, while we think about what else to do. |
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contrib | ||
doc | ||
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aclocal.m4 | ||
configure | ||
configure.in | ||
COPYRIGHT | ||
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Makefile | ||
README | ||
README.CVS |
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. The JDBC, ODBC, C++, Python, and Tcl interfaces have been moved to the PostgreSQL Projects Web Site at http://gborg.postgresql.org for separate maintenance. A Perl DBI/DBD driver is available from CPAN. 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 ftp://ftp.postgresql.org/pub/. For more information look at our web site located at http://www.postgresql.org/.