CREATE TABLE table_57449 ("Name" CLOB, "Bodyweight" FLOAT, "Snatch" FLOAT, "Clean & jerk" FLOAT, "Total  ( kg ) " CLOB)

what is the average bodyweight when snatch is 80?
SELECT AVG("Bodyweight") FROM table_57449 WHERE "Snatch" = '80'
SELECT AVG("Bodyweight") FROM "table_57449" WHERE "Snatch" = '80'