La question est comme cela:
In which years was the Physics prize awarded but no Chemistry prize. (WARNING - this question is way too hard for this level, you will need to use sub queries or joins).
la table est:nobel(yr, subject, winner)
Version imprimable
La question est comme cela:
In which years was the Physics prize awarded but no Chemistry prize. (WARNING - this question is way too hard for this level, you will need to use sub queries or joins).
la table est:nobel(yr, subject, winner)
...par ailleurs, ne t'attend pas trop à ce que le forum fasse tes devoirs...Code:
1
2
3 select yr from nobel where subject = 'Physics' minus select yr from nobel where subject = 'Chemistry'