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When calculating distance between float4/float8 values, we need to be a bit more careful about NaN values in order not to trigger assert. We consider NaN values to be equal (distace 0.0) and in infinite distance from all other values. On builds without asserts, this issue is mostly harmless - the ranges may be merged in less efficient order, but the index is still correct. Per report from Andreas Seltenreich. Backpatch to 14, where this new BRIN opclass was introduced. Reported-by: Andreas Seltenreich Discussion: https://postgr.es/m/87r1bw9ukm.fsf@credativ.de |
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README.git |
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/.