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If a table contains a generated column that's preceded by a dropped column, dumpTableData_insert failed to account for the dropped column, and would emit DEFAULT placeholder(s) in the wrong column(s). This resulted in failures at restore time. The default COPY code path did not have this bug, likely explaining why it wasn't noticed sooner. While we're fixing this, we can be a little smarter about the situation: (1) avoid unnecessarily fetching the values of generated columns, (2) omit generated columns from the output, too, if we're using --column-inserts. While these modes aren't expected to be as high-performance as the COPY path, we might as well be as efficient as we can; it doesn't add much complexity. Per report from Дмитрий Иванов. Back-patch to v12 where generated columns came in. Discussion: https://postgr.es/m/CAPL5KHrkBniyQt5e1rafm5DdXvbgiiqfEQEJ9GjtVzN71Jj5pA@mail.gmail.com |
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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/.