user: Question: How many channels were the games shown on in 2001-02?
Columns: ['Year', 'Channel', 'Play-by-play', 'Color commentator(s)', 'Courtside reporter', 'Studio host', 'Studio analysts']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['2009-10', 'Comcast SportsNet New England', 'Mike Gorman', 'Tom Heinsohn or Donny Marshall (Select Road Games)', 'Greg Dickerson', 'Gary Tanguay', 'Donny Marshall or Tom Heinsohn (Select road games)']
SQL:

assistant: SELECT COUNT("Channel") FROM "Table" WHERE "Year" = '2001-02';