Table: football_clubs
Columns: club
position_in_2012_13
first_season_in_top_division
number_of_seasons_in_top_division
number_of_seasons_in_prva_hnl
first_season_of_current_spell_in_top_division
top_division_titles
last_top_division_title

Question: Name the average number of seasons for Prva HNL of 17
SQL: SELECT AVG("number_of_seasons_in_top_division") FROM football_clubs WHERE "number_of_seasons_in_prva_hnl" = 17

Question: Name the least number of seasons in top division with position in 2012-13 of 001 1st
SQL: SELECT MIN("number_of_seasons_in_top_division") FROM football_clubs WHERE "position_in_2012_13" = '001 1st'