CREATE TABLE "past_winners" (
  "year" real,
  "mens_singles" text,
  "womens_singles" text,
  "mens_doubles" text,
  "womens_doubles" text,
  "mixed_doubles" text
);

Question: What was the first year of the Lithuanian National Badminton Championships?
SQL: SELECT MIN("year") FROM "past_winners";

Question: How many years did aivaras kvedarauskas juozas spelveris participate in the men's doubles?
SQL: SELECT COUNT("year") FROM "past_winners" WHERE "mens_doubles"='Aivaras Kvedarauskas Juozas Spelveris';