Table: league_stats_7
Columns: position
team
points
played
drawn
lost
against
difference

Question: What is the lowest Points when against is 50, and there are less than 20 played?
SQL: SELECT MIN("points") FROM league_stats_7 WHERE "against" = 50 AND "played" < 20

Question: What is the average Position with less than 57 against and the team is Juventus?
SQL: SELECT AVG("position") FROM league_stats_7 WHERE "against" < 57 AND "team" = 'juventus'

Question: What is the highest Position when the against is less than 41, and lost is more than 7?
SQL: SELECT MAX("position") FROM league_stats_7 WHERE "against" < 41 AND "lost" > 7

Question: What is the average Lost when there are 57 against?
SQL: SELECT AVG("lost") FROM league_stats_7 WHERE "against" = 57

Question: What is the lowest Lost for são paulo railway, Points more than 21?
SQL: SELECT MIN("lost") FROM league_stats_7 WHERE "team" = 'são paulo railway' AND "points" > 21