I see there's a recent commit which references this: [CALCITE-4864] Supports Polymorphic Table function - ASF JIRA (apache.org) <https://issues.apache.org/jira/browse/CALCITE-4864>
Something Teiid [0] did was to use JSON_TABLE() from dynamic data at runtime. I had an opportunity to speak to the maintainers, and they said this was a key strategy in writing adapters for non-relational sources like Couchbase, MongoDB, and the Salesforce API, etc. If I am understanding correctly, does this new polymorphic table functionality unlock the ability to have Calcite consume runtime data and use it with table-valued functions? If so, that's huge! Would love to whip up a demo of an HTTP request UDF that does a JSON_TABLE on the output. If not, I'd still love to learn what this functionality is all about and what you might do with it =) ---- [0]: teiid/teiid: Teiid is a data virtualization system that allows applications to use data from multiple, heterogenous data stores. (github.com) <https://github.com/teiid/teiid>
