I want to create a Statement level Trigger which means I want to insert only one record into table EMP_AUDIT when 1 or more rows are inserted into table EMP. For example: if I have 10 records inserted into EMP, then only 1 record should be inserted into EMP_AUDIT table.
There are no constraints on columns. (i.e. can be NULL)
I tried to use the following trigger but it gives me the Error(2,2): PL/SQL: SQL Statement ignored
Error(2,14): PL/SQL: ORA-00947: not enough values
CREATE OR REPLACE
TRIGGER TRIG_EMP AFTER INSERT ON EMP
BEGIN
INSERT INTO EMP_AUDIT
VALUES (TRANID,EMPNUM,SYSDATE);
END;
CREATE TABLE EMP
(TRANID NUMBER,
EMPNUM VARCHAR2(100),
EMPLOC VARCHAR2(100));
CREATE TABLE EMP_AUDIT
(EVENTID NUMBER,
EMPNUM VARCHAR2(100),
ENTRDATE DATE);
The statement-level trigger (which you have) cannot see the data that was inserted. After all, if there were 10 rows inserted, what values should the columns be for your audit table?
You need a row-level trigger for this to work, e.g.:
CREATE OR REPLACE
TRIGGER TRIG_EMP
AFTER INSERT ON EMP
FOR EACH ROW
BEGIN
INSERT INTO EMP_AUDIT
VALUES (:NEW.TRANID,:NEW.EMPNUM,:NEW.SYSDATE);
END;
Use this piece of code:
CREATE OR REPLACE TRIGGER
TRIG_EMP
AFTER INSERT ON EMP
FOR EACH ROW
BEGIN
INSERT INTO EMP_AUDIT
VALUES (:NEW.TRANID,:NEW.EMPNUM,:NEW.SYSDATE);
END;
Related
I have a trigger that gets a sequence number to put into my id column when insert a Row, the question is, how easily retun the new inserted row as resultSet.
create or replace trigger trg_Dependencia_id
before insert on DEPENDENCIA
for each row
begin
select DEPENDENCIA_id_seq.nextval
into :new.id
from dual;
end;
In Oracle, Triggers does not return any value. Also, triggers are not for this issues.
Maybe, you can insert your nextval a temp table after insert your table(DEPENDENCIA.DEPENDENCIA_id). Then you can handle it with a function.
The question I am going to ask is already there. But I don't have answer for this.
Please refer the below link.
ORACLE TRIGGER INSERT INTO ... (SELECT * ...)
I have around 600 columns in a table. After each insert in this table I need to insert the new row in another backup table.
Please tell how to use "INSERT INTO TABLE_NAME2 SELECT * FROM TABLE_NAME1" query in trigger.
Note: Without specifying columns in insert or select clause
Structure of both table is same. Specifying all the column name in trigger is difficult and also if new columns added, we need to add in trigger as well.
SQL> CREATE or REPLACE TRIGGER emp_after_insert AFTER INSERT ON emp
FOR EACH ROW
DECLARE
BEGIN
insert into emp_backup values (:new.empid, :new.fname, :new.lname);
DBMS_OUTPUT.PUT_LINE('Record successfully inserted into emp_backup table');
END;
reference:
http://www.tech-recipes.com/rx/19839/oracle-using-the-after-insert-and-after-update-triggers/
You should use COMPOUND TRIGGER. This trigger should look like this:
CREATE OR REPLACE TRIGGER t_copy_table1
FOR INSERT ON table1
COMPOUND TRIGGER
v_id number;
BEFORE EACH ROW IS
BEGIN
v_id := :new.id;
END BEFORE EACH ROW;
AFTER STATEMENT IS
BEGIN
insert into table2 select * from table1 where id=v_id;
END AFTER STATEMENT;
END t_copy_table1;
I have problem when trying to excute a sequence with a before insert trigger.
CREATE TABLE personne (ID number, nom varchar2(250 char));
CREATE SEQUENCE s_inc_pers START WITH 1 INCREMENT BY 1;
CREATE TRIGGER tr_inc_pers ON t1 BEFORE INSERT
FOR EACH ROW
DECLARE
BEGIN
select s_inc_pers into :new.t1.ID from DUAL;
END.
Oracle reports a bad bind variable if you try to reference something with :NEW that is not a column in the target table. In this case it may be prompting you for a bind value as the statement is malformed.
The NEW pseudorecord refers to the row in the triggering table that is being affected by the statement. You don't need to (and mustn't) include the table name when you use the pseudorecord field, so :new.t1.ID should just be :new.ID.
To get the next value from the sequence you need to use nextval, you can't only provide the sequence name.
Your clauses are also in the wrong order, you need the DML event (insert) befroe the target table.
CREATE TRIGGER tr_inc_pers BEFORE INSERT ON t1
FOR EACH ROW
BEGIN
select s_inc_pers.nextval into :new.ID from DUAL;
END;
As you are using 11g you don't even need to select from dual, you can just assign the column value:
CREATE TRIGGER tr_inc_pers BEFORE INSERT ON t1
FOR EACH ROW
BEGIN
:new.ID := s_inc_pers.nextval;
END;
I got an example that better explains the situation. I have a table A
CREATE TABLE A( ID NUMBER, VAL NVARCHAR2(255) )
and I create a trigger that does an update on the row it's just inserted
CREATE OR REPLACE TRIGGER XXX
AFTER INSERT
ON A
FOR EACH ROW
DECLARE
BEGIN
UPDATE A SET VAL = 'LOL' WHERE ID = :NEW.ID;
END;
When I perform an insert
INSERT INTO A VALUES(1, 'XX')
I get
ORA-04091: table name is mutating, trigger/function may not see it
Is there a workaround?
You don't need an update, just assign the new value in a BEFORE trigger.
CREATE OR REPLACE TRIGGER XXX
BEFORE INSERT --<< You need a BEFORE trigger for this to work.
ON A
FOR EACH ROW
BEGIN
:new.val := 'LOL';
END;
I am in the need of a trigger which will fire on any insert or updates on the specific table and while inserting or updating will substitute a credit card number column of the new row to something bogus such as "1111 1111 1111 1111"
Here is what I cooked up but it doesn't seem to work.
CREATE or REPLACE TRIGGER trigger_name AFTER INSERT ON table1
FOR EACH ROW
BEGIN
update table1 set cc_number_field = '11';
END;
I am on Oracle 10 if that matters.
It's much easier to manipulate the incoming :NEW line with a "before" trigger:
CREATE OR REPLACE TRIGGER table1_cc_trigger
BEFORE INSERT OR UPDATE ON table1
FOR EACH ROW
BEGIN
:NEW.cc_number_field := '1111 1111 1111 1111';
END;
/
Not tested:
CREATE OR REPLACE TRIGGER t
BEFORE
INSERT on ON table1 FOR EACH ROW
begin
:new.cc_number_field = '11';
END;
PL/SQL Reference - Triggers