Table: lux_national_badminton_champs
Columns: year
men_s_singles
women_s_singles
men_s_doubles
women_s_doubles
mixed_doubles

Question: Name the men's singles for christian wagener christian esch
SQL: SELECT "men_s_singles" FROM lux_national_badminton_champs WHERE "men_s_doubles" = 'christian wagener christian esch'

Question: Name the total numbe rof years for gaby weissen mireille kosmala
SQL: SELECT COUNT("year") FROM lux_national_badminton_champs WHERE "women_s_doubles" = 'gaby weissen mireille kosmala'

Question: Name the mixed doubles with martine ludwig angele da cruz, and men's doubles of christian wagener christian esch
SQL: SELECT "mixed_doubles" FROM lux_national_badminton_champs WHERE "women_s_doubles" = 'martine ludwig angele da cruz' AND "men_s_doubles" = 'christian wagener christian esch'