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vacuumdb would use a catalog query only when the command caller does not define a list of tables. Switching to a catalog table represents two advantages: - Relation existence check can happen before running any VACUUM or ANALYZE query. Before this change, if multiple relations are defined using --table, the utility would fail only after processing the firstly-defined ones, which may be a long some depending on the size of the relation. This adds checks for the relation names, and does nothing, at least yet, for the attribute names. - More filtering options can become available for the utility user. These options, which may be introduced later on, are based on the relation size or the relation age, and need to be made available even if the user does not list any specific table with --table. Author: Nathan Bossart Reviewed-by: Michael Paquier, Masahiko Sawada Discussion: https://postgr.es/m/FFE5373C-E26A-495B-B5C8-911EC4A41C5E@amazon.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/.