The Json_table_nested_path lives only inside the Table_function_json_table
and that last one
is the only class that manipulates the Json_table_nested_path internals.
Using methods
in your version, but it's the only class using these methods anyway.
So to me it's seems more honest to declare classes
I've rewritten it using the json->select_lex->leaf_tables as you suggested.
So the JSON_TABLE is calculated properly and all the dependencies seem to
be marked.
Still your testcase query fails the same way, so needs some more
investigation. To me it
looks more like optimizer issue than the JSON_TAB
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