Description of json_query_column
column_name [ JSON_query_return_type ] FORMAT JSON [ JSON_query_wrapper_clause ] PATH JSON_basic_path_expression [ JSON_query_on_error_clause ] [ JSON_query_on_empty_clause ]
column_name [ JSON_query_return_type ] FORMAT JSON [ JSON_query_wrapper_clause ] PATH JSON_basic_path_expression [ JSON_query_on_error_clause ] [ JSON_query_on_empty_clause ]