Table: football_season_stats
Columns: season
ave_attendance
ave_on_prev_season
competition
occupier

Question: How many values of attendance occur when ave. on previous season is +645?
SQL: SELECT COUNT("ave_attendance") FROM football_season_stats WHERE "ave_on_prev_season" = '+645'

Question: What is the lowest value of average attendance when average on previous season is -459?
SQL: SELECT MIN("ave_attendance") FROM football_season_stats WHERE "ave_on_prev_season" = '-459'

Question: What is the least value for average attendance when average on previous season is +644?
SQL: SELECT MIN("ave_attendance") FROM football_season_stats WHERE "ave_on_prev_season" = '+644'

Question: What is every value for average on previous season if the competition is league two?
SQL: SELECT "ave_on_prev_season" FROM football_season_stats WHERE "competition" = 'League Two'