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The default JSONB GIN opclass (jsonb_ops) converts numeric data values to strings for storage in the index. It must ensure that numeric values that would compare equal (such as 12 and 12.00) produce identical strings, else index searches would have behavior different from regular JSONB comparisons. Unfortunately the function charged with doing this was completely wrong: it could reduce distinct numeric values to the same string, or reduce equivalent numeric values to different strings. The former type of error would only lead to search inefficiency, but the latter type of error would cause index entries that should be found by a search to not be found. Repairing this bug therefore means that it will be necessary for 9.4 beta testers to reindex GIN jsonb_ops indexes, if they care about getting correct results from index searches involving numeric data values within the comparison JSONB object. Per report from Thomas Fanghaenel. |
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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: http://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 http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.