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Python 3 changed the behavior of PyMapping_Check(), breaking the test in plpython_to_hstore() that verifies whether a function result to be transformed is acceptable. A backwards-compatible fix is to first verify that the object doesn't pass PySequence_Check(). Perhaps accidentally, our other uses of PyMapping_Check() already follow uses of PySequence_Check(), so that no other bugs were created by this change. Per bug #17908 from Alexander Lakhin. Back-patch to all supported branches. Dmitry Dolgov and Tom Lane Discussion: https://postgr.es/m/17908-3f19a125d56a11d6@postgresql.org |
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README.git |
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: https://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. 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 https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.