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SetOperations - s select grade from dbst651_students union...

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drop table itec640_students; d select * from dbst651_students; s create table itec640_students as (select * from dbst651_students where rownum<5); r desc itec640_students; d select * from itec640_students; s insert into itec640_students (studentid, firstname, lastname, birthday, grade) values (5, 'George', 'Bush', To_date('11/02/1977', 'MM/DD/YYYY'), 'C'); v select * from itec640_students; s select * from dbst651_students minus select * from itec640_students; s select * from itec640_students minus select * from dbst651_students; select * from dbst651_students union select * from itec640_students;
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Unformatted text preview: s select grade from dbst651_students union select * from itec640_students; s select grade from dbst651_students union select birthday from itec640_students; s select firstName, substr(lastname, 1, 2) from dbst651_students union select firstName, lastName from itec640_students; s select * from dbst651_students union all select * from itec640_students; s select * from dbst651_students intersect select * from itec640_students; s select * from itec640_students intersect select * from dbst651_students;...
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