Question: Who was Choong Tan Fook's opponent in 1999?
SQL: SELECT "Opponent" FROM "2-12250787-1" WHERE "Year" = 1999.0 AND "Partner" = 'Choong Tan Fook';

Question: Which opponent played in the Chinese Taipei Open in 2000?
SQL: SELECT "Opponent" FROM "2-12250787-1" WHERE "Tournament" = 'Chinese Taipei Open' AND "Year" = 2000.0;