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003      1          0
004      0          1
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  student  subject  grade 
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  student1  ÓïÎÄ  80 
  student1  Êýѧ  70 
  student1  Ó¢Óï  60 
  student2  ÓïÎÄ  90 
  student2  Êýѧ  80 
  student2  Ó¢Óï  100 
  ¡­¡­ 
  ת»»Îª   
  ÓïÎÄ  Êýѧ  Ó¢Óï 
  student1  80  70  60 
  student2  90  80  100 
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  select  student,sum(decode(subject,'ÓïÎÄ',  grade,null))  "ÓïÎÄ", 
  sum(decode(subject,'Êýѧ',  grade,null))  "Êý


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