CREATE TABLE "individual" (
  "year" real,
  "boys_singles" text,
  "girls_singles" text,
  "boys_doubles" text,
  "girls_doubles" text,
  "mixed_doubles" text
);

Question: Which girls singles in 2012?
SQL: SELECT "girls_singles" FROM "individual" WHERE "year"=2012;

Question: Which boys double was in 1998?
SQL: SELECT "boys_doubles" FROM "individual" WHERE "year"=1998;

Question: Which is the earliest year that had mixed doubles for wang wei lu ying?
SQL: SELECT MIN("year") FROM "individual" WHERE "mixed_doubles"='wang wei lu ying';