Due to the current technologies and architecture in use, implementing built-in query functions is highly challenging, and as a result, they have not been incorporated at this time.
https://docs.ogc.org/is/18-088/18-088.html#requirement-request-data-built-in-query-functions
Due to the current technologies and architecture in use, implementing built-in query functions is highly challenging, and as a result, they have not been incorporated at this time.
https://docs.ogc.org/is/18-088/18-088.html#requirement-request-data-built-in-query-functions