oracle - Total count in sql -

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i need create view display total number of students have declared 2 majors (major1 , major2 not null).

what query should use?

my goal single row of output know order by clause irrelevant in case.

something this: 

    create view getnumberofstudentswithmajor           select count(*) dbo.students major1 not null , major2 not null

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