For Django to write a script

I did some SQL injection on their own in 2 tables. But the connection between them goes through another table. Tried to do a INSERT INTO and SELECT from these tables, but there sometimes is NULL, and I don't want to do SQL queries )
You need to implement as downloading via CSV, which will be two columns and will automatically be placed in the necessary context. Must be run as commands using the web interface.
Examples of such load is already in the code, maybe something will help. Implementation via teamviewer. Base muscle
Specify the cost per hour, please.