using subquery in the SET clause of UPDATE statement
SQL>
SQL> create table employee(
2 emp_no integer primary key
3 ,lastname varchar2(20) not null
4 ,firstname varchar2(15) not null
5 ,midinit varchar2(1)
6 ,street varchar2(30)
7 ,city varchar2(20)
8 ,state varchar2(2)
9 ,zip varchar2(5)
10 ,zip_4 varchar2(4)
11 ,area_code varchar2(3)
12 ,phone varchar2(8)
13 ,salary number(3)
14 ,birthdate date
15 ,hiredate date
16 ,title varchar2(20)
17 ,dept_no integer
18 ,mgr integer
19 ,region number
20 ,division number
21 ,total_sales number
22 );
Table created.
SQL> insert into employee(emp_no, lastname, firstname, midinit, street, city, state, zip,zip_4, area_code, phone, salary, birthdate, hiredate,title, dept_no, mgr, region, division, total_sales)
2 values (1,'Anderson','Nancy','N','33 Ave','London','NY','11111','1111','212','234-1111',3.75,'21-mar-1927','1-feb-1947','Sales Manager',2,null,100,10,40000);
1 row created.
SQL> insert into employee(emp_no, lastname, firstname, midinit, street, city, state, zip,zip_4, area_code, phone, salary, birthdate, hiredate,title, dept_no, mgr, region, division, total_sales)
2 values (2,'Last','First','F','12 Ave','Paris','CA','22222','2222','111','867-2222',7.75,'14-feb-1976','15-mar-1985','Sales Clerk',2,1,100,10,10000);
1 row created.
SQL> insert into employee(emp_no, lastname, firstname, midinit, street, city, state, zip,zip_4, area_code, phone, salary, birthdate, hiredate,title, dept_no, mgr, region, division, total_sales)
2 values (3,'Wash','Georgia','G','1 Street14','Barton','NJ','33333','3333','214','340-3333',11.50,'2-jul-1977','21-apr-2004','Designer',1,2,100,10,40000);
1 row created.
SQL> insert into employee(emp_no, lastname, firstname, midinit, street, city, state, zip,zip_4, area_code, phone, salary, birthdate, hiredate,title, dept_no, mgr, region, division, total_sales)
2 values (4,'Bush','Dave','D','56 Street','Island','RI','44444','4444','215','777-4444',21.65,'15-may-1945','2-aug-1975','Designer',1,2,100,10,40000);
1 row created.
SQL> insert into employee(emp_no, lastname, firstname, midinit, street, city, state, zip,zip_4, area_code, phone, salary, birthdate, hiredate,title, dept_no, mgr, region, division, total_sales)
2 values (5,'Will','Robin','W','56 Street','Island','MA','55555','5555','216','777-5555',24.65,'10-dec-1980','2-aug-2007','Designer',1,5,100,10,40000);
1 row created.
SQL> insert into employee(emp_no, lastname, firstname, midinit, street, city, state, zip,zip_4, area_code, phone, salary, birthdate, hiredate,title, dept_no, mgr, region, division, total_sales)
2 values (6,'Pete','Mona','M','13 Ave','York','MO','66666','6666','217','111-6666',9,'14-feb-1966','15-mar-1985','Sales Clerk',2,5,100,10,40000);
1 row created.
SQL> insert into employee(emp_no, lastname, firstname, midinit, street, city, state, zip,zip_4, area_code, phone, salary, birthdate, hiredate,title, dept_no, mgr, region, division, total_sales)
2 values (7,'Roke','John','J','67 Ave','New York','BC','77777','7777','218','122-7777',10.00,'14-jun-1955','15-mar-1975','Accountant',3,2,100,10,40000);
1 row created.
SQL> insert into employee(emp_no, lastname, firstname, midinit, street, city, state, zip,zip_4, area_code, phone, salary, birthdate, hiredate,title, dept_no, mgr, region, division, total_sales)
2 values (8,'Horry','Tedi','T','1236 Lane','Newton','NY','88888','8888','219','222-8888',13.00,'10-jun-1955','15-aug-1985','Sales Representative',3,2,100,10,50000);
1 row created.
SQL> insert into employee(emp_no, lastname, firstname, midinit, street, city, state, zip,zip_4, area_code, phone, salary, birthdate, hiredate,title, dept_no, mgr, region, division, total_sales)
2 values (9,'Bar','Candi','C','400 East Street','Yorken','NY','99999','9999','220','321-9999',12.00,'10-oct-1933','15-jan-1969','Sales Representative',3,5,100,10,35000);
1 row created.
SQL>
SQL>
SQL> select * from employee;
EMP_NO LASTNAME FIRSTNAME M
---------- -------------------- --------------- -
STREET CITY ST ZIP ZIP_ ARE
------------------------------ -------------------- -- ----- ---- ---
PHONE SALARY BIRTHDATE HIREDATE
-------- ---------- -------------------- --------------------
TITLE DEPT_NO MGR REGION DIVISION
-------------------- ---------- ---------- ---------- ----------
TOTAL_SALES
-----------
1 Anderson Nancy N
33 Ave London NY 11111 1111 212
234-1111 4 21-MAR-1927 00:00:00 01-FEB-1947 00:00:00
Sales Manager 2 100 10
40000
2 Last First F
12 Ave Paris CA 22222 2222 111
867-2222 8 14-FEB-1976 00:00:00 15-MAR-1985 00:00:00
Sales Clerk 2 1 100 10
10000
3 Wash Georgia G
1 Street14 Barton NJ 33333 3333 214
340-3333 12 02-JUL-1977 00:00:00 21-APR-2004 00:00:00
Designer 1 2 100 10
40000
4 Bush Dave D
56 Street Island RI 44444 4444 215
777-4444 22 15-MAY-1945 00:00:00 02-AUG-1975 00:00:00
Designer 1 2 100 10
40000
5 Will Robin W
56 Street Island MA 55555 5555 216
777-5555 25 10-DEC-1980 00:00:00 02-AUG-2007 00:00:00
Designer 1 5 100 10
40000
6 Pete Mona M
13 Ave York MO 66666 6666 217
111-6666 9 14-FEB-1966 00:00:00 15-MAR-1985 00:00:00
Sales Clerk 2 5 100 10
40000
7 Roke John J
67 Ave New York BC 77777 7777 218
122-7777 10 14-JUN-1955 00:00:00 15-MAR-1975 00:00:00
Accountant 3 2 100 10
40000
8 Horry Tedi T
1236 Lane Newton NY 88888 8888 219
222-8888 13 10-JUN-1955 00:00:00 15-AUG-1985 00:00:00
Sales Representative 3 2 100 10
50000
9 Bar Candi C
400 East Street Yorken NY 99999 9999 220
321-9999 12 10-OCT-1933 00:00:00 15-JAN-1969 00:00:00
Sales Representative 3 5 100 10
35000
9 rows selected.
SQL>
SQL> select o.emp_no, o.salary, (select avg(i.salary) * 1.1 from employee i
2 where i.dept_no = o.dept_no) AS dept_avg
3 from employee o
4 order by 1;
EMP_NO SALARY DEPT_AVG
---------- ---------- ----------
1 4 7.7
2 8 7.7
3 12 21.6333333
4 22 21.6333333
5 25 21.6333333
6 9 7.7
7 10 12.8333333
8 13 12.8333333
9 12 12.8333333
9 rows selected.
SQL>
SQL> UPDATE employee e1
2 SET e1.salary = 1.1 *
3 (SELECT avg(e2.salary)
4 FROM employee e2
5 WHERE e1.dept_no = e2.dept_no);
9 rows updated.
SQL>
SQL> select emp_no, salary from employee order by 1;
EMP_NO SALARY
---------- ----------
1 8
2 8
3 22
4 22
5 22
6 8
7 13
8 13
9 13
9 rows selected.
SQL>
SQL>
SQL> drop table employee;
Table dropped.
SQL> --
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