Nightly builds 12 and 13 have started flagging the dollar signs in table names as errors. This shows up in the screen xml files with data sources/containers.
Do you use Ultimate IDEA? It is a known issue, and there is no solution to deal with it. New entities are created with
_ inside the name instead of
$, and there is no any errors with them. In future, we plan to change all base entity names in such way.
By the way, it is only an inspection, and there is no real error. If you worry about it, you can disable JPA Facet in
Project Structure dialog.
Project Structure ->
Facets -> Remove JPA facets ->