text: INSERT INTO comment(question_id, user_id, content) VALUES
  (499,'riemann','math1'),
  (499,'riemann','math2'),
  (499,'riemann','math3'),
  (499,'riemann','math4'),
  (499,'riemann','math5'),
  (499,'riemann','math6'),
  (499,'riemann','math7'),
  (499,'riemann','math8'),
  (499,'riemann','math9'),
  (499,'riemann','math10');
  
  
  SELECT * FROM comment;
  
  UPDATE comment SET
  photo1='https://fuss10.elemecdn.com/e/5d/4a731a90594a4af544c0c25941171jpeg.jpeg',
  photo2='https://fuss10.elemecdn.com/8/27/f01c15bb73e1ef3793e64e6b7bbccjpeg.jpeg',
  photo3='https://fuss10.elemecdn.com/1/8e/aeffeb4de74e2fde4bd74fc7b4486jpeg.jpeg'
  WHERE id<700
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  