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Global error handling led to confusion and was hard to manage. With this change, errors from PostgreSQL are immediately reported to Python as exceptions. This requires setting a Python exception after reporting the caught PostgreSQL error as a warning, because PLy_elog destroys the Python exception state. Ideally, all places where PostgreSQL errors need to be reported back to Python should be wrapped in subtransactions, to make going back to Python from a longjmp safe. This will be handled in a separate patch. Jan Urbański
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/.