CREATE TABLE table_54607 ("Player" TEXT, "Tackles" FLOAT, "Asst." FLOAT, "TotalTK" FLOAT, "Sack" FLOAT, "Yards" FLOAT, "FumR" FLOAT)

what is the total sack when totaltk is 1 and asst. is more than 0?
SELECT SUM("Sack") FROM table_54607 WHERE "TotalTK" = '1' AND "Asst." > '0'
SELECT SUM("Sack") FROM "table_54607" WHERE "Asst." > '0' AND "TotalTK" = '1'