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Base de données relationnelle
fab386f748
ExecInitModifyTable() unconditionally required a ctid junk column even when the target was a partitioned table. This led to spurious "could not find junk ctid column" errors when all children were excluded and only the dummy root result relation remained. A partitioned table only appears in the result relations list when all leaf partitions have been pruned, leaving the dummy root as the sole entry. Assert this invariant (nrels == 1) and skip the ctid requirement. Also adjust ExecModifyTable() to tolerate invalid ri_RowIdAttNo for partitioned tables, which is safe since no rows will be processed in this case. Bug: #19099 Reported-by: Alexander Lakhin <exclusion@gmail.com> Author: Amit Langote <amitlangote09@gmail.com> Reviewed-by: Tender Wang <tndrwang@gmail.com> Reviewed-by: Kirill Reshke <reshkekirill@gmail.com> Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/19099-e05dcfa022fe553d%40postgresql.org Backpatch-through: 14 |
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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/.