user: Question: How many different people did different scores of high assists during the December 11 game?
Columns: ['Game', 'Date', 'Team', 'Score', 'High points', 'High rebounds', 'High assists', 'Location Attendance', 'Record']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [18.0, 'December 1', 'Phoenix', 'W 126–99 (OT)', 'Danilo Gallinari (27)', 'Danilo Gallinari (10)', 'Larry Hughes (12)', 'Madison Square Garden 19,763', '4–14']
SQL:

assistant: SELECT COUNT("High assists") FROM "Table" WHERE "Date" = 'December 11';