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This was previously fixed in9e215378dbut got broken again as a result of2489d76c4. It seems that commit causes ppi_clauses to contain duplicate clauses and it's no longer safe to check the list_length of that list to determine if there are join conditions other than what's mentioned in ppi_clauses. Here we adjust the check to count the distinct rinfo_serial mentioned in ppi_clauses. We expect that extra->restrictlist won't have duplicate rinfo_serials. Reported-by: Amadeo Gallardo Author: Richard Guo Discussion: https://postgr.es/m/CADFREbW-BLJd7-a5J%2B5wjVumeFG1ByXiSOFzMtkmY_SDWckTxw%40mail.gmail.com Backpatch-through: 16, where2489d76c4was introduced.
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/.