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SQL>
SQL> CREATE TABLE EMP (EMPNO NUMBER(4) NOT NULL,
2 ENAME VARCHAR2(10),
3 JOB VARCHAR2(9),
4 MGR NUMBER(4),
5 HIREDATE DATE,
6 SAL NUMBER(7, 2),
7 COMM NUMBER(7, 2),
8 DEPTNO NUMBER(2));
Table created.
SQL>
SQL> INSERT INTO EMP VALUES (7369, 'SMITH', 'CLERK', 7902, TO_DATE('17-DEC-1980', 'DD-MON-YYYY'), 800, NULL, 20);
1 row created.
SQL> INSERT INTO EMP VALUES (7499, 'ALLEN', 'SALESMAN', 7698, TO_DATE('20-FEB-1981', 'DD-MON-YYYY'), 1600, 300, 30);
1 row created.
SQL> INSERT INTO EMP VALUES (7521, 'WARD', 'SALESMAN', 7698, TO_DATE('22-FEB-1981', 'DD-MON-YYYY'), 1250, 500, 30);
1 row created.
SQL> INSERT INTO EMP VALUES (7566, 'JONES', 'MANAGER', 7839, TO_DATE('2-APR-1981', 'DD-MON-YYYY'), 2975, NULL, 20);
1 row created.
SQL> INSERT INTO EMP VALUES (7654, 'MARTIN', 'SALESMAN', 7698,TO_DATE('28-SEP-1981', 'DD-MON-YYYY'), 1250, 1400, 30);
1 row created.
SQL> INSERT INTO EMP VALUES (7698, 'BLAKE', 'MANAGER', 7839,TO_DATE('1-MAY-1981', 'DD-MON-YYYY'), 2850, NULL, 30);
1 row created.
SQL> INSERT INTO EMP VALUES (7782, 'CLARK', 'MANAGER', 7839,TO_DATE('9-JUN-1981', 'DD-MON-YYYY'), 2450, NULL, 10);
1 row created.
SQL> INSERT INTO EMP VALUES (7788, 'SCOTT', 'ANALYST', 7566,TO_DATE('09-DEC-1982', 'DD-MON-YYYY'), 3000, NULL, 20);
1 row created.
SQL> INSERT INTO EMP VALUES (7839, 'KING', 'PRESIDENT', NULL,TO_DATE('17-NOV-1981', 'DD-MON-YYYY'), 5000, NULL, 10);
1 row created.
SQL> INSERT INTO EMP VALUES (7844, 'TURNER', 'SALESMAN', 7698,TO_DATE('8-SEP-1981', 'DD-MON-YYYY'), 1500, 0, 30);
1 row created.
SQL> INSERT INTO EMP VALUES (7876, 'ADAMS', 'CLERK', 7788,TO_DATE('12-JAN-1983', 'DD-MON-YYYY'), 1100, NULL, 20);
1 row created.
SQL> INSERT INTO EMP VALUES (7900, 'JAMES', 'CLERK', 7698,TO_DATE('3-DEC-1981', 'DD-MON-YYYY'), 950, NULL, 30);
1 row created.
SQL> INSERT INTO EMP VALUES (7902, 'FORD', 'ANALYST', 7566,TO_DATE('3-DEC-1981', 'DD-MON-YYYY'), 3000, NULL, 20);
1 row created.
SQL> INSERT INTO EMP VALUES (7934, 'MILLER', 'CLERK', 7782,TO_DATE('23-JAN-1982', 'DD-MON-YYYY'), 1300, NULL, 10);
1 row created.
SQL>
SQL> set numformat 9999.99
SQL> select ename, hiredate, sal,
2 avg(sal)
3 over ( order by hiredate asc range 100 preceding ) avg_sal_100_days_BEFORE,
4 avg(sal)
5 over ( order by hiredate desc range 100 preceding ) avg_sal_100_days_AFTER
6 from emp
7 order by hiredate
8 /
ENAME HIREDATE SAL AVG_SAL_100_DAYS_BEFORE AVG_SAL_100_DAYS_AFTER
---------- --------- -------- ----------------------- ----------------------
SMITH 17-DEC-80 800.00 800.00 1216.67
ALLEN 20-FEB-81 1600.00 1200.00 2168.75
WARD 22-FEB-81 1250.00 1216.67 2358.33
JONES 02-APR-81 2975.00 1941.67 2758.33
BLAKE 01-MAY-81 2850.00 2168.75 2650.00
CLARK 09-JUN-81 2450.00 2758.33 1975.00
TURNER 08-SEP-81 1500.00 1975.00 2340.00
MARTIN 28-SEP-81 1250.00 1375.00 2550.00
KING 17-NOV-81 5000.00 2583.33 2562.50
JAMES 03-DEC-81 950.00 2340.00 1750.00
FORD 03-DEC-81 3000.00 2340.00 1750.00
ENAME HIREDATE SAL AVG_SAL_100_DAYS_BEFORE AVG_SAL_100_DAYS_AFTER
---------- --------- -------- ----------------------- ----------------------
MILLER 23-JAN-82 1300.00 2562.50 1300.00
SCOTT 09-DEC-82 3000.00 3000.00 2050.00
ADAMS 12-JAN-83 1100.00 2050.00 1100.00
14 rows selected.
SQL>
SQL> drop table emp;
Table dropped.
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