CREATE TABLE table_37269 ("Year" FLOAT, "Men's singles" CLOB, "Women's singles" CLOB, "Men's doubles" CLOB, "Women's doubles" CLOB, "Mixed doubles" CLOB)

what game had a doubles round in 1979
SELECT "Mixed doubles" FROM table_37269 WHERE "Year" = '1979'
SELECT "Mixed doubles" FROM "table_37269" WHERE "Year" = '1979'