Basic oracle queries Part -1

SQL QUERIES

1) Display the details of all employees

SQL>Select * from emp;


2) Display the depart information from department table

SQL>select * from dept;


3) Display the name and job for all the employees

SQL>select ename,job from emp;


4) Display the name and salary  for all the employees

SQL>select ename,sal from emp;


5) Display the employee no and totalsalary  for all the employees

SQL>select empno,ename,sal,comm, sal+nvl(comm,0) as”total  salary” from emp;


6) Display the employee name and annual salary for all employees.

SQL>select ename, 12*(sal+nvl(comm,0)) as “annual Sal” from emp;


7) Display the names of all the employees who are working in depart number 10.

SQL>select emame from emp where deptno=10;


8 ) Display the names of all the employees who are working as clerks and drawing a salary more than 3000.

SQL>select ename from emp where job=’CLERK’ and sal>3000;


9) Display the employee number and name  who are earning comm.

SQL>select empno,ename from emp where comm is not null;


10) Display the employee number and name  who do not earn any comm.

SQL>select empno,ename from emp where comm is null;


11) Display the names of employees who are working as clerks,salesman or analyst and drawing a salary more than 3000.

SQL>select ename  from emp where job=’CLERK’ OR JOB=’SALESMAN’ OR JOB=’ANALYST’ AND SAL>3000;


12) Display the names of the employees who are working in the company for the past 5 years;

SQL>select ename  from emp where to_char(sysdate,’YYYY’)-to_char(hiredate,’YYYY’)>=5;


13) Display the list of employees who have joined the company before 30-JUN-90 or after 31-DEC-90.

SQl> select ename from emp where hiredate < ’30-JUN-1990′ or hiredate >’31-DEC-90′;


14) Display current Date.

SQL>select sysdate from dual;


15) Display the list of all users in your database(use catalog table).

SQL>select username from all_users;


16) Display the names of all tables from current user;

SQL>select tname from tab;


17) Display the name of the current user.

SQL>show user;


18) Display the names of employees working in depart number 10 or 20 or 40 or employees working as CLERKS,SALESMAN or ANALYST.

SQL>select ename from emp where deptno in(10,20,40) or job in(‘CLERKS’,’SALESMAN’,’ANALYST’);


19) Display the names of employees whose name starts with alaphabet S.

SQL>select ename from emp where ename like ‘S%’;


20) Display the Employee names for employees whose name ends with alaphabet S.

SQL>select ename from emp where ename like ‘%S’;


21) Display the names of employees whose names have second alphabet A in their names.

SQL>select ename from emp where ename like ‘_A%’;


22) select the names of the employee whose names is exactly five characters in length.

SQL>select ename from emp where length(ename)=5;


23) Display the names of the employee who are not working as MANAGERS.

SQL>select ename from emp where job not in(‘MANAGER’);


24) Display the names of the employee who are not working as SALESMAN OR CLERK OR ANALYST.

SQL>select ename from emp where job not in(‘SALESMAN’,’CLERK’,’ANALYST’);


25) Display all rows from emp table.The system should wait after every screen full of informaction.

SQL>set pause on;


26) Display the total number of employee working in the company.

SQL>select count(*) from emp;


27) Display the total salary beiging paid to all employees.

SQL>select sum(sal) from emp;


28) Display the maximum salary from emp table.

SQL>select max(sal) from emp;


29) Display the minimum salary from emp table.

SQL>select min(sal) from emp;


30) Display the average salary from emp table.

SQL>select avg(sal) from emp;


31) Display the maximum salary being paid to CLERK.

SQL>select max(sal) from emp where job=’CLERK’;


32) Display the maximum salary being paid to depart number 20.

SQL>select max(sal) from emp where deptno=20;


33) Display the minimum salary being paid to any SALESMAN.

SQL>select min(sal) from emp where job=’SALESMAN’;


34) Display the average salary drawn by MANAGERS.

SQL>select avg(sal) from emp where job=’MANAGER’;


35) Display the total salary drawn by ANALYST working in depart number 40.

SQL>select sum(sal) from emp where job=’ANALYST’ and deptno=40;


36) Display the names of the employee in order of salary i.e the name of the employee earning lowest salary    should salary appear first.

SQL>select ename from emp order by sal;


37) Display the names of the employee in descending order of salary.

SQL>select ename from emp order by sal desc;


38) Display the names of the employee in order of employee name.

SQL>select ename from emp order by ename;


39) Display empno,ename,deptno,sal sort the output first base on name and within name by deptno and with in deptno by sal.

SQL>select empno,ename,deptno,sal from emp order by;


40) Display the name of the employee along with their annual salary(sal*12).The name of the employee earning highest annual salary should apper first.

SQL>select ename,sal*12 from emp order by sal desc;


41) Display name,salary,hra,pf,da,total salary for each employee. The output should be in the order of total salary,hra 15% of salary,da 10% of salary,pf 5% salary,total salary will be(salary+hra+da)-pf.

SQL>select ename,sal,sal/100*15 as hra,sal/100*5 as pf,sal/100*10 as da, sal+sal/100*15+sal/100*10-sal/100*5 as total from emp;


42) Display depart numbers and total number of employees working in each department.

SQL>select deptno,count(deptno)from emp group by deptno;


43) Display the various jobs and total number of employees within each job group.

SQL>select job,count(job)from emp group by job;


44) Display the depart numbers and total salary for each department.

SQL>select deptno,sum(sal) from emp group by deptno;


45) Display the depart numbers and max salary for each department.

SQL>select deptno,max(sal) from emp group by deptno;


46) Display the various jobs and total salary for each job

SQL>select job,sum(sal) from emp group by job;


47) Display the various jobs and total salary for each job

SQL>select job,min(sal) from emp group by job;


48) Display the depart numbers with more than three employees in each dept.

SQL>select deptno,count(deptno) from emp group by deptno having count(*)>3;


49) Display the various jobs along with total salary for each of the jobs where total salary is greater than 40000.

SQL>select job,sum(sal) from emp group by job having sum(sal)>40000;


50) Display the various jobs along with total number of employees in each job.The output should contain only those  jobs with more than three employees.

SQL>select job,count(empno) from emp group by job having count(job)>3;


51) Display the name of the empployee who earns highest salary.

SQL>select ename from emp where sal=(select max(sal) from emp);


52) Display the employee number and name for employee working as clerk and earning highest salary among clerks.

SQL>select empno,ename from emp where where job=’CLERK’ and sal=(select max(sal) from emp  where job=’CLERK’);


53) Display the names of salesman who earns a salary more than the highest salary of any clerk.

SQL>select ename,sal from emp where job=’SALESMAN’ and sal>(select max(sal) from emp where job=’CLERK’);


54) Display the names of clerks who earn a salary more than the lowest salary of any salesman.

SQL>select ename from emp where job=’CLERK’ and sal>(select min(sal) from emp where job=’SALESMAN’);


55) Display the names of the employees who earn highest salary in their respective departments.

SQL>select ename,sal,deptno from emp where sal in(select max(sal) from emp group by deptno);


56) Display the names of the employees who earn highest salaries in their respective job groups.

SQL>select ename,sal,job from emp where sal in(select max(sal) from emp group by job);


57) Display the employee names who are working in accounting department.

SQL>select ename from emp where deptno=(select deptno from dept where dname=’ACCOUNTING’);


58) Display the employee names who are working in Ahmedabad .

SQL>select ename from emp where deptno=(select deptno from dept where LOC=’Ahmedabad’);


59) Display the Job groups having total salary greater than the maximum salary for managers.

SQL>SELECT JOB,SUM(SAL) FROM EMP GROUP BY JOB HAVING SUM(SAL)>(SELECT MAX(SAL) FROM EMP WHERE JOB=’MANAGER’);


60) Display the names of employees from department number 10 with salary grether than that of any employee working in other department.

SQL>select ename from emp where deptno=10 and sal>any(select sal from emp where deptno not in 10);


61) Display the names of the employees from department number 10 with salary greater than that of all employee working in other departments.

SQL>select ename from emp where deptno=10 and sal>all(select sal from emp where deptno not in 10);


62) Display the names of the employees in Uppercase.

SQL>select upper(ename)from emp;


63) Display the names of the employees in Lowecase.

SQL>select lower(ename)from emp;


64) Display the names of the employees in Propercase.

SQL>select initcap(ename)from emp;


65) Display the length of Your name using appropriate function.

SQL>select length(‘name’) from dual;


66) Display the length of all the employee names.

SQL>select length(ename) from emp;


67) select name of the employee concatenate with employee number.

SQL>select ename||empno from emp;


68) User appropriate function and extract 3 characters starting from 2 characters from the following  string ‘Oracle’. i.e the out put should be ‘ac’.

SQL>select substr(‘oracle’,3,2) from dual;


69) Find the First occurance of character ‘a’ from the following string i.e ‘Computer Maintenance Corporation’.

SQL>SELECT INSTR(‘Computer Maintenance Corporation’,’a’,1) FROM DUAL;


70) Replace every occurance of alphabhet A with B in the string Allens(use translate function)

SQL>select translate(‘Allens’,’A’,’B’) from dual;


71) Display the informaction from emp table.Where job manager is found it should be displayed as boos(Use replace function).

SQL>select replace(JOB,’MANAGER’,’BOSS’) FROM EMP;


72) Display empno,ename,deptno from emp table.Instead of display department numbers display the related department name(Use decode function).

SQL>select empno,ename,decode(deptno,10,’ACCOUNTING’,20,’RESEARCH’,30,’SALES’,40,’OPRATIONS’) from emp;


73) Display your age in days.

SQL>select to_date(sysdate)-to_date(’10-sep-77′)from dual;


74) Display your age in months.

SQL>select months_between(sysdate,’10-sep-77′) from dual;


75) Display the current date as 15th Augest Friday Nineteen Ninety Saven.

SQL>select to_char(sysdate,’ddth Month day year’) from dual;


76) Display the following output for each row from emp table. A has joined the company on wednesday 13th August ninten nintey.

SQL>select ENAME||’ HAS JOINED THE COMPANY ON  ‘||to_char(HIREDATE,’day ddth Month  year’)   from EMP;


77) Find the date for nearest saturday after current date.

SQL>SELECT NEXT_DAY(SYSDATE,’SATURDAY’)FROM DUAL;


78) Display current time.

SQL>select to_char(sysdate,’hh:MM:ss’) from dual.

79) Display the date three months Before the current date.

SQL>select add_months(sysdate,3) from dual;


80) Display the common jobs from department number 10 and 20.

SQL>select job from emp where deptno=10 and job in(select job from emp where deptno=20);


81)Display the names of employees who earn a salary more than that of A or that of salary grether than   that of B.

SQL>select ename,sal from emp where sal> (select sal from emp where ename=’A’)and sal> (select sal from emp where ename=’B’);

Part2.

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Akash Padhiyar

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5 Comments

  1. mail me this1

  2. I most certenly liked your innovative angle that you have on the topic. Certainly wasn’t thinking on this at the time I started searching for tips. Your ideas were totally easy to get. Im glad to find that there’s an person online that obviously understands exactly what its is talking about.

  3. Ganta Soasekhar August 4, 2011

    NICE VERY USEFUL

  4. sunil more October 9, 2011

    I doubt about above 55 no. query
    Q.Display the names of the employees who earn highest salary in their respective departments.
    becz
    suppose subquery give result as
    sal deptno(for assumin)
    4000 10
    5000 20
    4500 30
    suppose in deptno 20 employee having salary 4000
    then it will also give the name of employee having salary 4000 in depno 20

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