Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE flight ( id VARCHAR, airport_id VARCHAR, pilot VARCHAR )
TABLE: CREATE TABLE airport ( id VARCHAR, airport_id VARCHAR, pilot VARCHAR )

### Question ###
How many airports haven't the pilot 'Thompson' driven an aircraft?

### Accurate SQL ###

SELECT COUNT(*) FROM airport WHERE NOT id IN (SELECT airport_id FROM flight WHERE pilot = 'Thompson')