CREATE TABLE table_name_50 (fa_cup NUMBER, total VARCHAR2, fa_trophy VARCHAR2, club VARCHAR2)

What is the sum of FA cups of club Stalybridge Celtic, which has more than 0 FA trophies and a total less than 20?
SELECT SUM(fa_cup) FROM table_name_50 WHERE fa_trophy > 0 AND club = "stalybridge celtic" AND total < 20
SELECT SUM("fa_cup") FROM "table_name_50" WHERE "club" = "stalybridge celtic" AND "fa_trophy" > 0 AND "total" < 20