For each major, find the social security number, name, and the GPA of
student(s) who achieved the highest GPA in the major.
StdMajor StdSSN StdFirstName StdLastName StdGPA
-------- --------- ------------ ----------- ------
IS 876543210 CRISTOPHER COLAN 4.00
FIN 456789012 JOE ESTRADA 3.20
ACCT 234567890 CANDY KENDALL 3.50
我student的table裡面
就是有StdSSN, StdLastName, StdFirstName, StdMajor, StdGPA
請問該怎麼求出答案 感謝
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