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b0f8a273e6
QTNTernary() contains logic to flatten, eg, '(a & b) & c' into 'a & b & c', which is all well and good, but it tries to do that to NOT nodes as well, so that '!!a' gets changed to '!a'. Explicitly restrict the conversion to be done only on AND and OR nodes, and add a test case illustrating the bug. In passing, provide some comments for the sadly naked functions in tsquery_util.c, and simplify some baroque logic in QTNFree(), which I think may have been leaking some items it intended to free. Noted while investigating a complaint from Andreas Seltenreich. Back-patch to all supported versions. |
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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. 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/.