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plpgsql fails on new-style CREATE FUNCTION/PROCEDURE commands within a routine or DO block, because make_execsql_stmt believes that a semicolon token always terminates a SQL command. Now, that's actually been wrong since the day it was written, because CREATE RULE has long allowed multiple rule actions separated by semicolons. But there are few enough people using multi-action rules that there was never an attempt to fix it. New-style SQL functions, though, are popular. psql has this same problem of "does this semicolon really terminate the command?". It deals with CREATE RULE by counting parenthesis nesting depth: a semicolon within parens doesn't end a command. Commitse717a9a18and029c5ac03created a similar heuristic to count matching BEGIN/END pairs (but only within CREATEs, so as not to be fooled by plain BEGIN). That's survived several releases now without trouble reports, so let's just absorb those heuristics into plpgsql. Per report from Samuel Dussault. Back-patch to v14 where new-style SQL function syntax came in. Discussion: https://postgr.es/m/YT2PR01MB88552C3E9AD40A6C038774A781722@YT2PR01MB8855.CANPRD01.PROD.OUTLOOK.COM
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. Copyright and license information can be found in the file COPYRIGHT. General documentation about this version of PostgreSQL can be found at: https://www.postgresql.org/docs/devel/ In particular, information about building PostgreSQL from the source code can be found at: https://www.postgresql.org/docs/devel/installation.html The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.