Table schema:
CREATE TABLE table_name_60 (yards INTEGER, sack VARCHAR, asst VARCHAR, totaltk VARCHAR)

Question: What is the total of yards when asst. is 19, totaltk is 60 and sack is more than 0?
SQL: SELECT SUM(yards) FROM table_name_60 WHERE asst = 19 AND totaltk = 60 AND sack > 0