we have two tables emp,dept.emp has eno,ename,sal and dept
has deptno,dname.how to find maxsal of each dept wise.which
join used for joining.
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Answer / priya
AS emp table doesnt have a field as deptno so we cant find
a maxsal of each dept wise, as no common field is used
| Is This Answer Correct ? | 12 Yes | 0 No |
Answer / ram reddy
Prerequisite
-------------
Both emp and dept tables should have deptno column
select depno,max(sal)
from emp e,dept d
where e.deptno=d.deptno
group by deptno;
| Is This Answer Correct ? | 14 Yes | 5 No |
Answer / yuvaevergreen
Since there is no common column, it may not be possible to
join two tables.
if deptno is in emp table, correlated query can be used
emp
eno ename sal deptno
1 yuva 10 tn1
2 yuv1 20 tn2
3 yuv3 30 tn1
select * from emp as e1
where sal in
(sel max(sal) from emp as e2
where e1.deptno=e2.deptno);
| Is This Answer Correct ? | 10 Yes | 1 No |
Answer / kondeti srinivas
emp table having depnto and dept table contains deptno
then only we can join the two table and find out max sal
dept wise
query:
select e.deptno,d.dname,max(e.sal) from emp e,dept d
where d.deptno=e.deptno
group by e.deptno,d.dname
| Is This Answer Correct ? | 5 Yes | 1 No |
Answer / subbareddy kake
with out using any Join conditions
Select deptno, max(sal)
from emp group by deptno
| Is This Answer Correct ? | 3 Yes | 1 No |
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