Nikita, thank you! I noticed another thing. 3-arguments version of functions jsonpath_exists(), jsonpath_predicate(), jsonpath_query(), jsonpath_query_wrapped() are:
1) Not documented 2) Not used in operator definitions 3) Not used in subsequent patches So, it looks like we can just remove then. But I think we're very likely can commit jsonpath patch to PostgreSQL 12, but I'm not sure about other patches. So, having those functions exposed to user can be extremely useful until we have separate nodes for SQL/JSON. So, I vote to document these functions. ------ Alexander Korotkov Postgres Professional: http://www.postgrespro.com The Russian Postgres Company
