How to show all dates although data does not exist taking into account a range of dates?

Hi everyone!

To get this functionality, I had to create a view with a cross join of the table having available all dates for each route and company and make a coalesce, if the value exists then value, else 0. The problem now is the performance, but it is a question of trying to improve the query to make it more efficient. 

Thank you all for your support.