content relationship in views
You can introduce functions fields into your productions views by adding a Relationship through the Entity reference field. 


Add a new Relationship Content referenced from field_production_content
Add a new Field field_date_functions and set it to use the Relationship field_production_content
Add a new Field field_tiket_link_functions and set it to use the Relationship field_production_content


If I understood your structure correctly you'll see functions fields on their related functions nodes in Views results.