SQL Queries frequently asked in interviews for fresher's based on
Employee table.
Sql interview Questions for freshers ,all sql queries for the beginners
,sql Questionss and Answers are given bellow .
SQL Queries on Employee table EMP and Department Table DEPT :
EMP : Employee Table DEPT :Department Table
Q21 : What is the Query to List
the Enames those are starting with ‘S’ and with five characters?
Answer:select ename from emp
where ename like ‘S%’ and length (ename) =5;
Q 22 : What is the Query to List out the
emps those are having four chars and third character must be ‘r’?
Answer : select * from
emp where length(ename) = 4 and ename like ‘__R%’;
Q 23 : What is the Query for to List out
the Five character names starting with ‘S’ and ending with ‘H’?
Answer : select * from
emp where length(ename) = 5 and ename like ‘S%H’;
Q 24 : What is the Query for to List out
the emps who joined in January.
Answer : select * from
emp where to_char (hiredate,’mon’) = ‘jan’;
Q 25 : What is the Query for List out
the emps who joined in the month of which second character is ‘a’?
Answer :
select * from emp where to_char(hiredate,’mon’) like ‘_a_’;
{or}
select * from emp where to_char(hiredate,’mon’) like ‘_a%’;
Q 26
: What is the Query for List the emps whose Sal is four digit number
ending with Zero?
Answer : select * from
emp where length (sal) = 4 and sal like ‘%0’;
Q 27 : What is the Query for List the
emps whose names having a character set ‘ll’ together?
Answer : select * from
emp where ename like ‘%LL%’;
Q 28 : What is the Query for to List out
the emps those who joined in 80’s?
Answer : select * from
emp where to_char(hiredate,’yy’) like ‘8%’;
Q 29 : What is the Query for to List the
emps who does not belong to Deptno 20 ?
Answer : select * from
emp where deptno not in (20); {or}
select * from emp where deptno != 20; {or}
select * from emp where deptno not like ‘20’;
Q 30 : What is the Query for to List all
the emps except ‘PRESIDENT’ & ‘MGR” in asc order of Salaries.
Answer : Select * from
emp where job not in (‘PRESIDENT’,’MANAGER’) order by sal asc; {or}
select * from emp where job not like ‘PRESIDENT’ and job not like
‘MANAGER’ order by sal asc;
Q 31 : What is the Query for to List all
the emps who joined before or after 1981?
select * from emp where to_char(hiredate,’YYYY’) <> ‘1981’ ; {or}
Answer : select * from
emp where to_char (hiredate,’YYYY’) not in (‘1981’); {or}
select * from emp where to_char ( hiredate,’YYYY’) != ‘1981’; {or}
select * from emp where to_char (hiredate ,’YYYY’) not like ‘1981’;
Q 32 : What is the Query for to List the
emps whose Empno not starting with digit78?
Answer : select * from
emp where empno not like ‘78%’;
Q 33 : What is the Query for List the
emps who are working under ‘MGR’.
Answer : select
e.ename || ‘ has an employee ‘|| m.ename from emp e , emp m where e.empno =
m.mgr; {or}
select e.ename || ‘ works for ‘ || m.ename from emp e ,emp m where e.mgr
= m.empno ;
Q 34 : What is the Query for List the
emps who joined in any year but not belongs to the month of March?
Answer : select *
from emp where to_char (hiredate,’MON’) not in (‘MAR’); {or}
select * from emp where to_char (hiredate,’MON’) != ‘MAR’; {or}
select * from emp where to_char(hiredate,’MONTH’) not like ‘MAR%’ ;
Q 35 : What is the Query for to List all
the Clerks of Deptno 20?
Answer : select *
from emp where job =‘CLERK’ and deptno = 20;
Q 36 : What is the Query for
List the emps of Deptno 30 or 10 joined in the year 1981?
Answer : select *
from emp where to_char(hiredate,’YYYY’) = ‘1981’ and (deptno =30 or deptno =10)
; {or}select * from emp where to_char (hiredate,’YYYY’) in (‘1981’) and (deptno
= 30 or deptno =10 ) ;
Q 37 : What is the Query for to Display
the details of SMITH?
Answer : select *
from emp where ename = ‘SMITH’ ;
Q 38 : What is the Query for to Display
the location of SMITH?
Answer :
select loc from emp e , dept d where e.ename = ‘SMITH’ and e.deptno =
d.deptno ;
Q 39 : What is the Query for to List the
total information of EMP table along with DNAME and Loc of all the emps Working
Under ‘ACCOUNTING’ & ‘RESEARCH’ in the asc Deptno ?
Answer : select *
from emp e ,dept d where (dname = ‘ACCOUNTING’ or dname =’RESEARCH’ ) and
e.deptno = d.deptno order by e.deptno asc; {or}
select * from emp e ,dept d where d.dname in (‘ACCOUNTING’,’RESEARCH’)
and e.deptno = d.deptno order by e.deptno asc;
Q 40 : What is the Query for to List the
Empno, Ename, Sal, Dname of all the ‘MGRS’ and ‘ANALYST’ working in New York,
Dallas with an exp more than 7 years without receiving the Comm asc order of
Loc?
Answer : select
e.empno,e.ename,e.sal,d.dname from emp e ,dept d where d.loc in (‘NEW
YORK’,’DALLAS’) and e.deptno = d.deptno and e.empno in (select e.empno from emp
e where e.job in (‘MANAGER’,’ANALYST’) and
(months_between(sysdate,e.hiredate)/12)> 7 and e.comm. is null) order by
d.loc asc;
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Employee table, All Sql Queries on emp and dept tables wipro frequently asked Questions
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