Show the number of transactions with transaction type code "SALE" for different investors if it is larger than 0.
SELECT investor_id ,  COUNT(*) FROM TRANSACTIONS WHERE transaction_type_code  =  "SALE" GROUP BY investor_id
SELECT investor_id ,  COUNT(*) FROM TRANSACTIONS WHERE transaction_type_code  =  "SALE" GROUP BY investor_id
[{'investor_id': 2, 'COUNT(*)': 2}, {'investor_id': 3, 'COUNT(*)': 2}, {'investor_id': 6, 'COUNT(*)': 1}, {'investor_id': 17, 'COUNT(*)': 1}, {'investor_id': 18, 'COUNT(*)': 1}]