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Formerly, DecodeDate attempted to verify the day-of-the-month exactly, but it was under the misapprehension that it would know whether we were looking at a BC year or not. In reality this check can't be made until the calling function (eg DecodeDateTime) has processed all the fields. So, split the BC adjustment and validity checks out into a new function ValidateDate that is called only after processing all the fields. In passing, this patch makes DecodeTimeOnly work for BC inputs, which it never did before. (The historical veracity of all this is nonexistent, of course, but if we're going to say we support proleptic Gregorian calendar then we should do it correctly. In any case the unpatched code is broken because it could emit dates that it would then reject on re-inputting.) Per report from Bernd Helmle. Back-patch as far as 8.0; in 7.x we were not using our own calendar support and so this seems a bit too risky to put into 7.4. |
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| COPYRIGHT | ||
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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 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/.