Question: Who participated in the Mixed Doubles when Tracey Hallam participated in the Women's Singles?
SQL: SELECT "Mixed doubles" FROM "2-12209553-1" WHERE "Women's singles" = 'Tracey Hallam';

Question: Who participated in the Mixed Doubles when Simon Santoso participated in the Men's Singles after 2008?
SQL: SELECT "Mixed doubles" FROM "2-12209553-1" WHERE "Men's singles" = 'Simon Santoso' AND "Year" > 2008.0;