analytics-Partition-clause-with-aggregation.sql

REM Script: Analytics - Partition clause with aggregation
REM SQL from the KISS (Keep It Simply SQL) Analytic video series by Developer Advocate Connor McDonald. This script is the first look at the partition clause with aggregates.

Run this script standalone, or take it as part of the complete Analytics class at https://tinyurl.com/devgym-classes

droptable emp;

createtableemp (
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) 
);

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);

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);

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);

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);

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);

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);

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);

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);

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);

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);

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);

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);

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);

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);

commit



select empno, ename, job, hiredate, sal 
from emp 
order by sal


select deptno, empno, ename, job, sal,
sum(sal) OVER (
 partition by deptno
order by ename) as running_total
from emp
order by deptno, ename;

select deptno, empno, ename, job, sal,
sum(sal) OVER (
 partition by deptno
order by ename) as running_total
from emp
order by deptno, hiredate;

select deptno, job, ename, sal,
sum(sal) over () total_sal,
sum(sal) over 
 ( partition by deptno) sal_by_dept,
sum(sal) over 
 ( partition by deptno, job) sal_by_dept_job
from emp
order by deptno, job;