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doing anything interesting, such as calling RevalidateCachedPlan(). The necessity of this is demonstrated by an example from Willem Buitendyk: during a replan, the planner might try to evaluate SPI-using functions, and so we'd better be in a clean SPI context. A small downside of this fix is that these two functions will now fail outright if called when not inside a SPI-using procedure (ie, a SPI_connect/SPI_finish pair). The documentation never promised or suggested that that would work, though; and they are normally used in concert with other functions, mainly SPI_prepare, that always have failed in such a case. So the odds of breaking something seem pretty low. In passing, make SPI_is_cursor_plan's error handling convention clearer, and fix documentation's erroneous claim that SPI_cursor_open would return NULL on error. Before 8.3 these functions could not invoke replanning, so there is probably no need for back-patching.
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 including some of the more common listed below: C++ - http://thaiopensource.org/development/libpqxx/ JDBC - http://jdbc.postgresql.org ODBC - http://odbc.postgresql.org Perl - http://search.cpan.org/~dbdpg/ PHP - http://www.php.net Python - http://www.initd.org/ Ruby - http://ruby.scripting.ca/postgres/ Other language binding are available from a variety of contributing parties. PostgreSQL also has a great number of procedural languages available, a short, incomplete list is below: PL/pgSQL - included in PostgreSQL source distribution PL/Perl - included in PostgreSQL source distribution PL/PHP - http://projects.commandprompt.com/projects/public/plphp PL/Python - included in PostgreSQL source distribution PL/Java - http://pgfoundry.org/projects/pljava/ PL/Tcl - included in PostgreSQL source distribution 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/.