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The grammar will only accept something syntactically similar to a function call in a function-in-FROM expression. However, there are various ways to input something that ruleutils.c won't deparse that way, potentially leading to a view or rule that fails dump/reload. Fix by inserting a dummy CAST around anything that isn't going to deparse as a function (which is one of the ways to get something like that in there in the first place). In HEAD, also make use of the infrastructure added by this to avoid emitting unnecessary parentheses in CREATE INDEX deparsing. I did not change that in back branches, thinking that people might find it to be unexpected/unnecessary behavioral change. In HEAD, also fix incorrect logic for when to add extra parens to partition key expressions. Somebody apparently thought they could get away with simpler logic than pg_get_indexdef_worker has, but they were wrong --- a counterexample is PARTITION BY LIST ((a[1])). Ignoring the prettyprint flag for partition expressions isn't exactly a nice solution anyway. This has been broken all along, so back-patch to all supported branches. Discussion: https://postgr.es/m/10477.1499970459@sss.pgh.pa.us |
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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, 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/.