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51893985d3
generateSerialExtraStmts() was sloppy about handling the case where SEQUENCE NAME is given with a not-schema-qualified name. It was generating a CreateSeqStmt with an unqualified sequence name, and an AlterSeqStmt whose "owned_by" DefElem contained a T_String Value with a null string pointer in the schema-name position. The generated nextval() argument was also underqualified. This accidentally failed to fail at runtime, but only so long as the current default creation namespace at runtime is the right namespace. That's bogus; the parse-time transformation is supposed to be inserting the right schema name in all cases, so as to avoid any possible skew in that selection. I'm not sure this could fail in pg_dump's usage, but it's still wrong; we have had real bugs in this area before adopting the policy that parse_utilcmd.c should generate only fully-qualified auxiliary commands. A slightly lesser problem, which is what led me to notice this in the first place, is that pprint() dumped core on the AlterSeqStmt because of the bogus T_String. Noted while poking into the open problem with ALTER SEQUENCE breaking pg_upgrade. |
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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/.