user: Question: How many points categories are there when the losing bonus is 2 and points for are 642?
Columns: ['Club', 'Played', 'Won', 'Drawn', 'Lost', 'Points for', 'Points against', 'Tries for', 'Tries against', 'Try bonus', 'Losing bonus', 'Points']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Club', 'Played', 'Won', 'Drawn', 'Lost', 'Points for', 'Points against', 'Tries for', 'Tries against', 'Try bonus', 'Losing bonus', 'Points']
SQL:

assistant: SELECT COUNT("Points") FROM "Table" WHERE "Losing bonus" = '2' AND "Points for" = '642';