Table: t_2004_05_football_conference
Columns: player
club
league
play_offs
fa_cup
fa_trophy
total

Question: What are the average play-offs that have an FA Cup greater than 3?
SQL: SELECT AVG("play_offs") FROM t_2004_05_football_conference WHERE "fa_cup" > 3

Question: How many totals have a play-off less than 0?
SQL: SELECT COUNT("total") FROM t_2004_05_football_conference WHERE "play_offs" < 0

Question: Which league has an FA cup greater than 0, with a total greater than 21?
SQL: SELECT "league" FROM t_2004_05_football_conference WHERE "fa_cup" > 0 AND "total" > 21

Question: What is the highest play-offs that have stevenage borough as the club, and a total greater than 21?
SQL: SELECT MAX("play_offs") FROM t_2004_05_football_conference WHERE "club" = 'stevenage borough' AND "total" > 21