CREATE TABLE "table1_12027364_1" (
  "year" real,
  "mens_singles" text,
  "womens_singles" text,
  "mens_doubles" text,
  "womens_doubles" text,
  "mixed_doubles" text
);

Question: Who won the womens doubles when wu jianqui won the womens singles?
SQL: SELECT "womens_doubles" FROM "table1_12027364_1" WHERE "womens_singles"='Wu Jianqui';

Question: Who won the mixed doubles when ji xinpeng won the mens singles?
SQL: SELECT "mixed_doubles" FROM "table1_12027364_1" WHERE "mens_singles"='Ji Xinpeng';

Question: How many womens singles winners were there when peter rasmussen won the mens singles?
SQL: SELECT COUNT("womens_singles") FROM "table1_12027364_1" WHERE "mens_singles"='Peter Rasmussen';