Question: Which men's singles has mixed doubles with Kevin Cao Melody Liang?
SQL: SELECT "Men's singles" FROM "2-17259359-1" WHERE "Mixed doubles" = 'Kevin Cao Melody Liang';

Question: Which men's singles has mixed doubles with Chen Hung-ling Chou Chia-chi?
SQL: SELECT "Men's singles" FROM "2-17259359-1" WHERE "Mixed doubles" = 'Chen Hung-ling Chou Chia-chi';