Nested query

select E.ename from employee E where E.eid IN (select S.eid from salary S where S.regno=103);

Source: tutorialspoint.com

Nested query

create table student(id number(10), name varchar2(20),classID number(10), marks varchar2(20));
Insert into student values(1,'pinky',3,2.4);
Insert into student values(2,'bob',3,1.44);
Insert into student values(3,'Jam',1,3.24);
Insert into student values(4,'lucky',2,2.67);
Insert into student values(5,'ram',2,4.56);
select * from student;

Source: tutorialspoint.com

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