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Per previous convention (see ace397e9d24eddc56e7dffa921f506117b602d78), drop SQL:2008 and only keep the latest two standards and SQL-92. Note: SQL:2016-2 lists a large number of non-reserved keywords that are really just information_schema column names related to new features. Those kinds of thing have not previously been listed as keywords, and this was apparently done here by mistake, since these keywords have been removed again in post-2016 working drafts. So in order to avoid bloating the keywords table unnecessarily, I have omitted these erroneous keywords here.
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/.