drop table empORA-00942: table or view does not existMore Details: https://docs.oracle.com/error-help/db/ora-00942
create table emp (
EMPNO NUMBER(4) ,
ENAME VARCHAR2(10) ,
JOB VARCHAR2(9) ,
MGR NUMBER(4) ,
HIREDATE DATE ,
SAL NUMBER(7,2) ,
COMM NUMBER(7,2) ,
DEPTNO NUMBER(2)
) Table created.
Insert into emp (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7369,'SMITH','CLERK',7902,to_date('17/DEC/80','DD/MON/RR'),800,null,20) 1 row(s) inserted.
Insert into emp (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7499,'ALLEN','SALESMAN',7698,to_date('20/FEB/81','DD/MON/RR'),1600,300,30) 1 row(s) inserted.
Insert into emp (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7521,'WARD','SALESMAN',7698,to_date('22/FEB/81','DD/MON/RR'),1250,500,30) 1 row(s) inserted.
Insert into emp (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7566,'JONES','MANAGER',7839,to_date('02/APR/81','DD/MON/RR'),2975,null,20) 1 row(s) inserted.
Insert into emp (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7654,'MARTIN','SALESMAN',7698,to_date('28/SEP/81','DD/MON/RR'),1250,1400,30) 1 row(s) inserted.
Insert into emp (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7698,'BLAKE','MANAGER',7839,to_date('01/MAY/81','DD/MON/RR'),2850,null,30) 1 row(s) inserted.
Insert into emp (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7782,'CLARK','MANAGER',7839,to_date('09/JUN/81','DD/MON/RR'),2450,null,10) 1 row(s) inserted.
Insert into emp (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7788,'SCOTT','ANALYST',7566,to_date('09/DEC/82','DD/MON/RR'),3000,null,20) 1 row(s) inserted.
Insert into emp (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7839,'KING','PRESIDENT',null,to_date('17/NOV/81','DD/MON/RR'),5000,null,10) 1 row(s) inserted.
Insert into emp (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7844,'TURNER','SALESMAN',7698,to_date('08/SEP/81','DD/MON/RR'),1500,null,30) 1 row(s) inserted.
Insert into emp (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7876,'ADAMS','CLERK',7788,to_date('12/JAN/83','DD/MON/RR'),1100,null,20) 1 row(s) inserted.
Insert into emp (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7900,'JAMES','CLERK',7698,to_date('03/DEC/81','DD/MON/RR'),950,null,30) 1 row(s) inserted.
Insert into emp (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7902,'FORD','ANALYST',7566,to_date('03/DEC/81','DD/MON/RR'),3000,null,20) 1 row(s) inserted.
Insert into emp (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7934,'MILLER','CLERK',7782,to_date('23/JAN/82','DD/MON/RR'),1300,null,10) 1 row(s) inserted.
commitStatement processed.
select deptno, min(sal)
from emp
group by deptno| DEPTNO | MIN(SAL) | 30 | 950 | 20 | 800 | 10 | 1300 |
|---|
select d.deptno, d.min_sal, e.empno
from emp e,
( select deptno, min(sal) min_sal
from emp
group by deptno
) d
where d.deptno = e.deptno
and e.sal = d.min_sal| DEPTNO | MIN_SAL | EMPNO | 30 | 950 | 7900 | 20 | 800 | 7369 | 10 | 1300 | 7934 |
|---|
select deptno, min(sal),
min(empno) KEEP ( dense_rank FIRST order by sal) empno
from emp
group by deptno| DEPTNO | MIN(SAL) | EMPNO | 10 | 1300 | 7934 | 20 | 800 | 7369 | 30 | 950 | 7900 |
|---|