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When copying the definition of an index rebuilt concurrently for the new entry, the index information was taken directly from the old index using the relation cache. In this case, predicates and expressions have some post-processing to prepare things for the planner, which loses some information including the collations added in any of them. This inconsistency can cause issues when attempting for example a table rewrite, and makes the new indexes rebuilt concurrently inconsistent with the old entries. In order to fix the problem, fetch expressions and predicates directly from the catalog of the old entry, and fill in IndexInfo for the new index with that. This makes the process more consistent with DefineIndex(), and the code is refactored with the addition of a routine to create an IndexInfo node. Reported-by: Manuel Rigger Author: Michael Paquier Discussion: https://postgr.es/m/CA+u7OA5Hp0ra235F3czPom_FyAd-3+XwSJmX95r1+sRPOJc9VQ@mail.gmail.com Backpatch-through: 12 |
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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/.