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The current method of coercing the boolean result value of JsonPathExists() to the target type specified for an EXISTS column, which is to call the type's input function via json_populate_type(), leads to an error when the target type is integer, because the integer input function doesn't recognize boolean literal values as valid. Instead use the boolean-to-integer cast function for coercion in that case so that using integer or domains thereof as type for EXISTS columns works. Note that coercion for ON ERROR values TRUE and FALSE already works like that because the parser creates a cast expression including the cast function, but the coercion of the actual result value is not handled by the parser. Tests by Jian He. Reported-by: Jian He <jian.universality@gmail.com> Author: Jian He <jian.universality@gmail.com> Author: Amit Langote <amitlangote09@gmail.com> Discussion: https://postgr.es/m/CACJufxEo4sUjKCYtda0_qt9tazqqKPmF1cqhW9KBOUeJFqQd2g@mail.gmail.com Backpatch-through: 17 |
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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.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.