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f7ea931287
isn't being used anywhere anymore, and there seems no point in a generic index_keytest() routine when two out of three remaining access methods aren't using it. Also, add a comment documenting a convention for letting access methods define private flag bits in ScanKey sk_flags. There are no such flags at the moment but I'm thinking about changing btree's handling of "required keys" to use flag bits in the keys rather than a count of required key positions. Also, if some AM did still want SK_NEGATE then it would be reasonable to treat it as a private flag bit.
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/.