optional for:
json_table(…)
BigQuery
Db2 (LUW)
DuckDB
H2
MariaDB
MySQL
Oracle DB
PostgreSQL
SQL Server
SQLite
2013
2015
2017
2019
2021
2023
2025
17 - 18
12cR1 - 23.26.0
11.5.0 - 12.1.2