user: Question: How many date of appointments are there when the date of vacancy was 2 October 2010?
Columns: ['Team', 'Outgoing manager', 'Manner of departure', 'Date of vacancy', 'Incoming manager', 'Date of appointment']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Steaua Bucureşti', 'Victor Piţurcă', 'Resigned', '9 August 2010', 'Ilie Dumitrescu', '12 August 2010']
SQL:

assistant: SELECT COUNT("Date of appointment") FROM "Table" WHERE "Date of vacancy" = '2 October 2010';