What is the sum of FA cups of club Stalybridge Celtic, which has more than 0 FA trophies and a total less than 20?
CREATE TABLE table_name_50 (
    fa_cup INTEGER,
    total VARCHAR,
    fa_trophy VARCHAR,
    club VARCHAR
)
SELECT SUM(fa_cup) FROM table_name_50 WHERE fa_trophy > 0 AND club = "stalybridge celtic" AND total < 20
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the sum of FA cups of club Stalybridge Celtic, which has more than 0 FA trophies and a total less than 20? ### Input: CREATE TABLE table_name_50 (
    fa_cup INTEGER,
    total VARCHAR,
    fa_trophy VARCHAR,
    club VARCHAR
) ### Response: SELECT SUM(fa_cup) FROM table_name_50 WHERE fa_trophy > 0 AND club = "stalybridge celtic" AND total < 20