Table: estonian_international_badminton
Columns: year
men_s_singles
women_s_singles
men_s_doubles
women_s_doubles
mixed_doubles

Question: Who all played mixed doubles in 2010?
SQL: SELECT "mixed_doubles" FROM estonian_international_badminton WHERE "year" = 2010

Question: Who played women's singles in the year after 2006 when men's singles was cancelled?
SQL: SELECT "women_s_singles" FROM estonian_international_badminton WHERE "year" > 2006 AND "men_s_singles" = 'cancelled'

Question: Who played Men's singles in 2007?
SQL: SELECT "men_s_singles" FROM estonian_international_badminton WHERE "year" = 2007