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ORA-25000: invalid use of bind variable in trigger WHEN clause

Hi, everybody 👋 ...
I'm trying to create a trigger with a when
clause inside its header, which contains the condition that will fire the operator.
trigger idea is to insert empno, ename, old_sal,new_sal into tempTable values (:new.empno, :new.ename, :old.sal, :old.sal);
when the difference between old and new salary is more than 1000.
How can I do this using a when
clause in the trigger head
If there are other methods that are more effective than when
clause in the trigger head, that would be great
Thanks in advance
---------------------------------------------------------------------------------------------
CREATE OR REPLACE TRIGGER up_2th_diff_trg
BEFORE
UPDATE
ON EMP
FOR EACH ROW
WHEN (:NEW.sal - :OLD.sal > 1000)
BEGIN
INSERT INTO EMP_LOG (empno,ename,old_sal,new_sal) VALUES (:NEW.empno,:NEW.ename,:OLD.sal,:NEW.sal);
DBMS_OUTPUT.PUT_LINE('Trigger task completed successfully');
END;
/
------------------------------------------------------------------------
ORA-25000: invalid use of bind variable in trigger WHEN clause
Best Answer
-
You don't use colon in WHEN clause:
CREATE OR REPLACE TRIGGER up_2th_diff_trg BEFORE UPDATE ON EMP FOR EACH ROW WHEN (NEW.sal - OLD.sal > 1000) BEGIN INSERT INTO EMP_LOG(empno,ename,old_sal,new_sal) VALUES(:NEW.empno,:NEW.ename,:OLD.sal,:NEW.sal); DBMS_OUTPUT.PUT_LINE('Trigger task completed successfully'); END; /
SY.
Answers
-
You don't use colon in WHEN clause:
CREATE OR REPLACE TRIGGER up_2th_diff_trg BEFORE UPDATE ON EMP FOR EACH ROW WHEN (NEW.sal - OLD.sal > 1000) BEGIN INSERT INTO EMP_LOG(empno,ename,old_sal,new_sal) VALUES(:NEW.empno,:NEW.ename,:OLD.sal,:NEW.sal); DBMS_OUTPUT.PUT_LINE('Trigger task completed successfully'); END; /
SY.
-
When experiencing syntactic difficulties, check the documentation.
PL/SQL Language guide/create trigger
-
You're right, it worked ...
thank u bro