how to add new column if two values are same in two tables

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Student table as follows

Name Rollno subject marks

A 1 ENG 50
B 2 TAM 60

Report table as follows

Rollno marks

1 50
2 60

in the above two table if the marks column is matched. then add the new column called result.

select s.name,s.rollno,s.subject from student s,Report r where s.Rollno=r.rollno and s.marks=r.marks

when i run the above query, output as follows

Name Rollno Subject Marks

A 1 ENG 50
B 2 TAM 60

But i want the output as follows

Name Rollno Subject Marks Result

A 1 ENG 50 Pass
B 2 TAM 60 Pass

from the above query how

Posted 11-Apr-14 20:15pm

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MAYANK GEETE · Answer 1 · 2014-04-11T20:35:00

Solution 1

try this

SQL

select s.name,s.rollno,s.subject,case when s.marks<30 then 'PASS' else 'FAIL' End from student s,Report r where s.Rollno=r.rollno and s.marks=r.marks

Posted 11-Apr-14 20:35pm

MAYANK GEETE

Peter Leow · Answer 2 · 2014-04-12T00:09:00

Solution 2

Assuming 50 and above is 'PASS' else 'FAIL':

SQL

select name, rollno, subject, marks,
case when
   marks >=50 then 'PASS'
else
   'FAIL'
end
from student s where exists
(
select * from report r
  where r.rollno = s.rollno and r.marks = s.marks
)

Posted 12-Apr-14 0:09am

Peter Leow