An Phi

Also, it seems we don't validate the column at the end of the join expression, for example ``` ###Relational Database model::DB ( Table MyTable ( ID INTEGER, PARENT_ID INTEGER, NODE_NAME...

``` ###Relational Database test::DB ( Table PersonTable ( id INTEGER PRIMARY KEY, manager_id INTEGER, name VARCHAR(200) ) Join MySelfJoin(PersonTable.id = {target}.manager_id) ) ###Pure Class test::Person { name: String[1]; } ###Mapping...

Just an update, we will stop working on this for now. `engine` will need to take care of this first, then we will handle this on our end

@reyes-michael Thanks for spotting the issue. I have done some recent cleanups - https://github.com/finos/legend/pull/844. We changed the Docker images' names a while back so there are some fixes to do....

Also consider the following refactor at code-level - [ ] Restrict the usage of type classifier and consider using the element instead the only mechanism that really needs the type...