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)
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...
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3 select yr from nobel where subject = 'Physics' minus select yr from nobel where subject = 'Chemistry'
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