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Per discussion with others, allowing REINDEX INDEX CONCURRENTLY to work for invalid indexes when working directly on them can have a lot of value to unlock situations with invalid indexes without having to use a dance involving DROP INDEX followed by an extra CREATE INDEX CONCURRENTLY (which would not work for indexes with constraint dependency anyway). This also does not create extra bloat on the relation involved as this works on individual indexes, so let's enable it. Note that REINDEX TABLE CONCURRENTLY still bypasses invalid indexes as we don't want to bloat the number of indexes defined on a relation in the event of multiple and successive failures of REINDEX CONCURRENTLY. More regression tests are added to cover those behaviors, using an invalid index created with CREATE INDEX CONCURRENTLY. Reported-by: Dagfinn Ilmari Mannsåker, Álvaro Herrera Author: Michael Paquier Reviewed-by: Peter Eisentraut, Dagfinn Ilmari Mannsåker Discussion: https://postgr.es/m/20190411134947.GA22043@alvherre.pgsql |
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README
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/.