Trigger that logs actions for inserting actions : Inserting « Trigger « Oracle PL/SQL Tutorial






SQL>
SQL>
SQL>
SQL> create table employee
  2          (
  3           emp_no                 integer     primary key
  4          ,lastname               varchar2(20)    not null
  5          ,firstname              varchar2(15)    not null
  6          ,midinit                varchar2(1)
  7          ,street                 varchar2(30)
  8          ,city                   varchar2(20)
  9          ,state                  varchar2(2)
 10          ,zip                    varchar2(5)
 11          ,zip_4                  varchar2(4)
 12          ,area_code              varchar2(3)
 13          ,phone                  varchar2(8)
 14          ,salary                 number(5,2)
 15          ,birthdate              date
 16          ,hiredate               date
 17          ,title                  varchar2(20)
 18          ,dept_no                integer
 19        ,mgr              integer
 20        ,region           number
 21        ,division         number
 22        ,total_sales          number
 23         );

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>
SQL>
SQL> CREATE TABLE logit( event   VARCHAR2(400) );

Table created.

SQL>
SQL>
SQL> create or replace trigger tr_trans_log
  2  BEFORE INSERT OR UPDATE OR DELETE ON employee
  3  DECLARE
  4   v_msg  varchar2(200) ;
  5   PRAGMA AUTONOMOUS_TRANSACTION;
  6  BEGIN
  7   IF inserting THEN
  8      v_msg := ' Insert into employee @ ' || to_char(sysdate, 'mm/dd/yyyy hh:mi') || ' by ' || user ;
  9   ELSIF updating THEN
 10      v_msg := ' Update of employee @ ' || to_char(sysdate, 'mm/dd/yyyy hh:mi') || ' by ' || user ;
 11   ELSIF deleting THEN
 12      v_msg := ' Delete of employee @ ' || to_char(sysdate, 'mm/dd/yyyy hh:mi') || ' by ' || user ;
 13   END IF;
 14   INSERT INTO logit VALUES(v_msg);
 15   COMMIT;
 16  END;
 17  /

Trigger created.

SQL>
SQL> drop table logit;

Table dropped.

SQL>
SQL> drop table employee;

Table dropped.








28.16.Inserting
28.16.1.Trigger that logs actions for inserting actions
28.16.2.React to Inserting and Updating actions
28.16.3.If new value is null use the value from a sequence