CREATE TABLE table_1162 ("Year" FLOAT, "Mens singles" TEXT, "Womens singles" TEXT, "Mens doubles" TEXT, "Womens doubles" TEXT, "Mixed doubles" TEXT)

Who won the mixed doubles in 1998?
SELECT "Mixed doubles" FROM table_1162 WHERE "Year" = '1998'
SELECT "Mixed doubles" FROM "table_1162" WHERE "Year" = '1998'