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ccc6759dbb
failed to consider the possibility that it would get T_SCALAR, T_RECORD, or T_ROW instead because the word happens to match a plpgsql variable name. In particular, give "duplicate declaration" rather than generic "syntax error" if the same identifier is declared twice in the same block, as per my recent complaint. Also behave more sanely when decl_aliasitem or proc_condition or opt_lblname is coincidentally not T_WORD. Refactor the related productions a bit to reduce duplication. This is a longstanding bug, but it doesn't seem critical enough to back-patch.
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. 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/.