Oracle: ON DUPLICATE KEY UPDATE [duplicate]
Oracle doesn't have on duplicate key update Use MERGE instead:
MERGE INTO my_table trg USING (SELECT 30 as question_id,0 as ug FROM DUALUNION ALL SELECT 31,1 FROM DUAL) src ON (src.question_id = trg.question_id)WHEN NOT MATCHED THEN INSERT(question_id, ug) VALUES(src.question_id, src.ug)WHEN MATCHED THEN UPDATESET trg.ug = src.ug