user: Question: What is points diff when points against is 123?
Columns: ['Team', 'Tries for', 'Tries against', 'Try diff', 'Points for', 'Points against', 'Points diff']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Bourgoin', '27', '4', '+23', '196', '66', '+130']
SQL:

assistant: SELECT "Points diff" FROM "Table" WHERE "Points against" = '123';