Table: basketball_club_stats
Columns: season
tier
league
postseason
european_competitions

Question: What is the Season when league shows bundesliga, and a European competition of played korac cup?
SQL: SELECT "season" FROM basketball_club_stats WHERE "league" = 'bundesliga' AND "european_competitions" = 'played korac cup'

Question: What is the average Tier when the postseason shows -, and the season is 2012–13?
SQL: SELECT AVG("tier") FROM basketball_club_stats WHERE "postseason" = '–' AND "season" = '2012–13'

Question: What is the European competition when the tier is more than 2?
SQL: SELECT "european_competitions" FROM basketball_club_stats WHERE "tier" > 2