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SQL>
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(5,2)
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>
SQL>
SQL>
SQL> insert into employee(emp_no, lastname, firstname, midinit, street, city, state, zip,zip_4, area_code, phone, birthdate, title)
2 values (1,'Gardinia','Joy','R','688 Ave','New York','NY','12122','2333','212','200-3393','12-nov-1956','President');
1 row created.
SQL>
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,'Anderson','Lucy','J','33 Ave','New York','NY','43552','6633','212','234-4444',7.75,'21-mar-1951','1-feb-1994','Sales Manager',2,1,100,10,40000);
1 row created.
SQL>
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,'Somers','Ingrid','E','12 Ave','New York','NY','76822','8763','212','867-6893',7.75,'14-feb-1963','15-mar-1995','Sales Clerk',2,2,100,10,10000);
1 row created.
SQL>
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,'Washington','Georgia','J','13th Street','New York','NY','43122','4333','212','340-4365',11.50,'2-jul-1963','21-apr-1994','Designer',1,1,100,10,40000);
1 row created.
SQL>
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,'Doright','Dudley','J','56 Langer Street','Staten Island','NY','23332','4983','718','777-4365',21.65,'15-may-1958','2-aug-1994','Designer',1,1,100,10,40000);
1 row created.
SQL>
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,'Doright','Dorothy','R','56 Langer Street','Staten Island','NY','23332','4983','718','777-4365',24.65,'10-dec-1968','2-aug-1994','Designer',1,1,100,10,40000);
1 row created.
SQL>
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,'Perry','Donna','R','1st Ave','New York','NY','44444','3444','212','111-6893',7.75,'14-feb-1967','15-mar-1995','Sales Clerk',2,1,100,10,40000);
1 row created.
SQL>
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,'Roger','John','E','67 H Ave','New York','NY','33822','1163','212','122-6893',10.00,'14-jun-1956','15-mar-1995','Accountant',3,1,100,10,40000);
1 row created.
SQL>
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,'Hall','Ted','R','1236 Lane','New York','NY','33823','1164','212','222-4393',13.00,'10-jun-1959','15-aug-1997','Sales Representative',3,1,100,10,50000);
1 row created.
SQL>
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 ( 10,'Barbee','Candice','L','400 Street','New York','NY','33811','2009','212','321-6873',12.00,'10-oct-1964','15-jan-1999','Sales Representative',3,1,100,10,35000);
1 row created.
SQL>
SQL> create or replace trigger tr_emp_maint_restrict
2 before update or insert or delete
3 on employee
4 begin
5 if to_char(sysdate, 'hh24') >= '09' AND
6 to_char(sysdate, 'hh24') <= '17' then
7 null;
8 else
9 raise_application_error (-20000, 'Employee info may not be modified at this time!') ;
10 end if ;
11 end ;
12 /
Trigger created.
SQL>
SQL> --to test
SQL> update employee set area_code = 212 where emp_no = 1;
update employee set area_code = 212 where emp_no = 1
*
ERROR at line 1:
ORA-20000: Employee info may not be modified at this time!
ORA-06512: at "JAVA2S.TR_EMP_MAINT_RESTRICT", line 6
ORA-04088: error during execution of trigger 'JAVA2S.TR_EMP_MAINT_RESTRICT'
SQL>
SQL>
SQL>
SQL> drop table employee;
Table dropped.
SQL>
SQL>
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