I'm trying to figure out how to write a 'not in' style query in django.
For example, the query structure I'm thinking of would look like this.

```
select table1.* 
from table1
where table1.id not in 
(
  select table2.key_to_table1
  from table2 
  where table2.id = some_parm 
)

```

What would the django syntax look like assuming models called table1 and table2?