Horton

SQL/JSON: Fix JSON_QUERY(... WITH CONDITIONAL WRAPPER)

Amit Langote <amitlan@postgresql.org>

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Commit: e6c45d85dc168fb05b5ee5596a4de5167c9fe01f
Author: Amit Langote <amitlan@postgresql.org>
Date: 2024-09-12T00:39:56Z
Releases: 18.0 
SQL/JSON: Fix JSON_QUERY(... WITH CONDITIONAL WRAPPER)

Currently, when WITH CONDITIONAL WRAPPER is specified, array wrappers
are applied even to a single SQL/JSON item if it is a scalar JSON
value, but this behavior does not comply with the standard.

To fix, apply wrappers only when there are multiple SQL/JSON items
in the result.

Reported-by: Peter Eisentraut <peter@eisentraut.org>
Author: Peter Eisentraut <peter@eisentraut.org>
Author: Amit Langote <amitlangote09@gmail.com>
Reviewed-by: Andrew Dunstan <andrew@dunslane.net>
Discussion: https://postgr.es/m/8022e067-818b-45d3-8fab-6e0d94d03626%40eisentraut.org
Backpatch-through: 17

Files

PathChange+/−
src/backend/utils/adt/jsonpath_exec.c modified +19 −5
src/test/regress/expected/sqljson_queryfuncs.out modified +23 −26
src/test/regress/sql/sqljson_queryfuncs.sql modified +6 −7

Discussion