I have a problem with trigger not working. Here is my trigger code
create or replace trigger "ZIVOTINJE_T2"
BEFORE
insert or update on "ZIVOTINJE"
for each row
begin
IF new.cijena>10 THEN
:new.cijena:=9.9
ELSEIF new.cijena<0 THEN
:new.cijena:=0.1
END IF;
end;
When I try to insert entity in table ZIVOTINJE, I get this
ORA-04098: trigger 'DENISS.ZIVOTINJE_T2' is invalid and failed re-validation
I can see three problems in the code of your trigger:
You need to refer to the new values of the row using :new (including the colon), not new.
To change values that are about to be inserted/updated, write :new.cijena := 9.9; instead of SET new.cijena=9.9. Note that (a) there is no SET keyword here; (b) the assignment operator is :=, not =; and (c) you need a semi-colon at the end of the line.
Use ELSIF instead of ELSEIF.
Finally, in SQL*Plus, you can use SHOW ERRORS TRIGGER "ZIVOTINJE_T2" to show the errors for this trigger.
try this.
CREATE OR REPLACE TRIGGER "ZIVOTINJE_T2"
BEFORE
insert or update on "ZIVOTINJE"
for each row
begin
IF :new.cijena = 10 THEN
:new.cijena := 9.9;
ELSE
IF :new.cijena < 0 THEN
:new.cijena := 0.1;
END IF;
end if;
end;
Related
This question already has answers here:
syntax Error in PostgreSQL when I try to create Trigger
(2 answers)
Closed last year.
I am getting a syntax error for my code which I can't understand why
am I missing something?
also, I read this I did not get my answer
syntax Error in PostgreSQL when I try to create Trigger
CREATE TRIGGER MyExampleName AFTER INSERT ON baskets
FOR EACH ROW BEGIN
UPDATE customers
SET customers.credit=customers.credit - NEW.amount
WHERE customers.id = NEW.customer_id;
END;
and tried it like this as well:
CREATE TRIGGER MyExampleName AFTER INSERT ON baskets
FOR EACH ROW AS $$ BEGIN
UPDATE customers
SET customers.credit=customers.credit - NEW.amount
WHERE customers.id = NEW.customer_id;
END;
$$ LANGUAGE plpgsql;
Error:
ERROR: syntax error at or near "BEGIN"
LINE 2: FOR EACH ROW BEGIN
^
SQL state: 42601
Character: 67
I'd say the first comment on your question pretty much covers it all. You cannot put the trigger code in the trigger body, you must first create a separate function and include the function call inside the trigger body.
This example comes directly from the Postgres docs:
-- 1. Create the function that does what you need
CREATE FUNCTION emp_stamp() RETURNS trigger AS $emp_stamp$
BEGIN
-- Check that empname and salary are given
IF NEW.empname IS NULL THEN
RAISE EXCEPTION 'empname cannot be null';
END IF;
IF NEW.salary IS NULL THEN
RAISE EXCEPTION '% cannot have null salary', NEW.empname;
END IF;
-- Who works for us when they must pay for it?
IF NEW.salary < 0 THEN
RAISE EXCEPTION '% cannot have a negative salary', NEW.empname;
END IF;
-- Remember who changed the payroll when
NEW.last_date := current_timestamp;
NEW.last_user := current_user;
RETURN NEW;
END;
$emp_stamp$ LANGUAGE plpgsql;
-- 2. Create the trigger with the 'EXECUTE FUNCTION function_name' part
-- replacing the actual function name from step 1.
CREATE TRIGGER emp_stamp BEFORE INSERT OR UPDATE ON emp
FOR EACH ROW EXECUTE FUNCTION emp_stamp();
CREATE OR REPLACE PROCEDURE UPDATE_AGE_VALUES
IS
cursor_ssn_number tbl_Patient.ssn_number%type;
cursor_patient_age tbl_Patient.patient_age%type;
age1 tbl_Patient.patient_age%type;
age2 tbl_Patient.patient_age%type;
age3 tbl_Patient.patient_age%type;
ssn_number1 tbl_Patient.ssn_number%type;
ssn_number2 tbl_Patient.ssn_number%type;
ssn_number3 tbl_Patient.ssn_number%type;
average number:=0;
i number:=1;
CURSOR cursor_tbl_Patient IS
SELECT ssn_number,patient_age FROM tbl_Patient ORDER BY patient_age ASC;
BEGIN
OPEN cursor_tbl_Patient;
LOOP
FETCH cursor_tbl_Patient into cursor_ssn_number,cursor_patient_age;
EXIT WHEN cursor_tbl_Patient%NOTFOUND;
IF i=1 THEN
age1:=cursor_patient_age;
ssn_number1:=cursor_ssn_number;
i:=i+1;
ELSIF i=2 THEN
age2:=cursor_patient_age;
ssn_number2:=cursor_ssn_number;
i:=i+1;
ELSIF i=3 THEN
age3:=cursor_patient_age;
ssn_number3:=cursor_ssn_number;
average:=(age1+age2+age3)/3;
UPDATE tbl_Patient SET patient_age=average where ssn_number IN (ssn_number1,ssn_number2,ssn_number3);
i:=1;
average:=0;
commit;
END IF;
END LOOP;
CLOSE cursor_tbl_Patient;
END;
/
CREATE OR REPLACE TRIGGER CHANGE_ROW_VALUES
AFTER INSERT ON tbl_Patient
FOR EACH ROW
BEGIN
CALL UPDATE_AGE_VALUES;
END;
/
Above code tries to modify the row values after a row is inserted. The procedure is created a execute.But I'm not able to call the procedure from the Trigger. I don't know why.
The error I'm getting is :
2/7 ,PLS-00103: Encountered the symbol "UPDATE_AGE_VALUES" when
,expecting one of the following:
,:= . ( # % ;
,The symbol ":=" was substituted for "UPDATE_AGE_VALUES" to
,continue.
Am I missing out anything?
Thanks in advance!!!
CALL is not a valid statement in PL/SQL. To call a procedure in PL/SQL you just need to give its name, as in:
CREATE OR REPLACE TRIGGER CHANGE_ROW_VALUES
AFTER INSERT ON tbl_Patient
FOR EACH ROW
BEGIN
UPDATE_AGE_VALUES;
END;
Your next problem will be that the UPDATE_AGE_VALUES reads and updates tbl_Patient, which will fail because UPDATE_AGE_VALUES is called from a row trigger which is defined on tbl_Patient. If you remove the FOR EACH ROW from the trigger it might work, but I won't answer for the performance.
Share and enjoy.
CREATE OR REPLACE TRIGGER CHANGE_ROW_VALUES
AFTER INSERT ON tbl_Patient
FOR EACH ROW
BEGIN
UPDATE_AGE_VALUES();
END;
This worked for me!!!
I have a few things of code I need help debugging but I feel that if I can get one of them running i'll be able to get the rest(oh how i hope).
create or replace
trigger minimumwage
before insert or update on Employee
for each row
begin
if :new.Wage < 7.25
then raise_application_error('-20000,Pay is below Texas minimum wage!');
end if;
end;
/
I'm trying to do this on a table ran on my school's server through sqlplus if that helps.
When you're getting an error, it's always helpful to specify what error. There is a syntax error in the raise_application_error call in your trigger. That procedure takes two arguments, a number and a string. You are passing in a single argument that is one long string.
create or replace trigger minimumwage
before insert or update on Employee
for each row
begin
if :new.Wage < 7.25
then
raise_application_error(-20000,'Pay is below Texas minimum wage!');
end if;
end;
should be valid assuming there is a WAGE column in your EMPLOYEE table.
create or replace trigger deny_dec_pu before update of PU on ARTICLE
for each row
declare
erreur_pu exception;
begin
*insert into erreur values ('Operation de MAJ',sysdate);*
-- this intruction is never executec why ?
if (:new.pu < :old.pu) then
raise erreur_pu ;
end if;
exception
when erreur_pu then
Raise_application_error(-20100, 'rrrrrrrr', FALSE);
end;
/
I'm trying to create a trigger for my table which automatically adds a published date based on when a certain flag is set to 'Y'
I don't have much experience with creating triggers but so far this is what i've got
create or replace
TRIGGER ADD_CREATE_DT
after UPDATE of approved ON articles
for each row
BEGIN
:new.create_dt := sysdate where approved = 'Y';
END;
I get this error when updating the column
trigger 'USER.ADD_CREATE_DT' is invalid and failed re-validation
Any ideas?
Thanks
Use the WHEN clause:
create or replace
TRIGGER ADD_CREATE_DT
after UPDATE of approved ON articles
for each row
when (new.approved = 'Y')
BEGIN
:new.create_dt := sysdate;
END;
Or use IF:
create or replace
TRIGGER ADD_CREATE_DT
after UPDATE of approved ON articles
for each row
BEGIN
if :new.approved = 'Y' then
:new.create_dt := sysdate;
end if;
END;
In this case, WHEN is more appropriate and efficient.
create or replace
TRIGGER ADD_CREATE_DT
after UPDATE of approved ON articles
for each row
BEGIN
IF :NEW.approved = 'Y' THEN
:new.create_dt := sysdate;
END IF;
END;
I don't know What version of Oracle do you use?
In Oracle 10g I got the following error:
ORA-04084: cannot change NEW values for this trigger type
04084. 00000 - "cannot change NEW values for this trigger type"
*Cause: New trigger variables can only be changed in before row
insert or update triggers.
*Action: Change the trigger type or remove the variable reference.
It does not allow to change the field on AFTER triggers.
I'm trying to execute the following SQL statement on Oracle 11g. I'm not experienced when it comes to Oracle and I'm not sure why this is failing. This query was provided to me by our developer.
I was attempting to execute this through the SQL worksheet in OEM.
CREATE OR REPLACE TRIGGER TBL_ADMINCOMMAND_TRG BEFORE
INSERT OR UPDATE ON tbl_AdminCommands FOR EACH ROW
BEGIN
IF inserting
AND :new.ADMINCOMMANDID IS NULL THEN
SELECT TBL_ADMINCOMMANDS_SEQ.nextval INTO :new.ADMINCOMMANDID FROM DUAL;
END IF;
END;
ALTER TRIGGER TBL_ADMINCOMMAND_TRG ENABLE;
The code you show works for me, but only as two separate commands:
1)
CREATE OR REPLACE TRIGGER TBL_ADMINCOMMAND_TRG BEFORE
INSERT OR UPDATE ON tbl_AdminCommands FOR EACH ROW
BEGIN
IF inserting
AND :new.ADMINCOMMANDID IS NULL THEN
SELECT TBL_ADMINCOMMANDS_SEQ.nextval INTO :new.ADMINCOMMANDID FROM DUAL;
END IF;
END;
2)
ALTER TRIGGER TBL_ADMINCOMMAND_TRG ENABLE;
Try doing them one at a time.
As an aside, this line:
SELECT TBL_ADMINCOMMANDS_SEQ.nextval INTO :new.ADMINCOMMANDID FROM DUAL;
can be simplified to this in 11G:
:new.ADMINCOMMANDID := TBL_ADMINCOMMANDS_SEQ.nextval;
In fact, the whole trigger can be simplified to:
CREATE OR REPLACE TRIGGER TBL_ADMINCOMMAND_TRG
BEFORE INSERT ON tbl_AdminCommands
FOR EACH ROW
WHEN (NEW.ADMINCOMMANDID IS NULL)
BEGIN
:new.ADMINCOMMANDID := TBL_ADMINCOMMANDS_SEQ.nextval;
END;
If you are using SQL*Plus, you should end your PL/SQL commands with a single forward slash on a line by itself:
CREATE OR REPLACE TRIGGER TBL_ADMINCOMMAND_TRG
BEFORE INSERT OR UPDATE ON tbl_AdminCommands
FOR EACH ROW
BEGIN
IF inserting AND :new.ADMINCOMMANDID IS NULL
THEN
SELECT TBL_ADMINCOMMANDS_SEQ.nextval
INTO :new.ADMINCOMMANDID
FROM DUAL;
END IF;
END;
/
ALTER TRIGGER TBL_ADMINCOMMAND_TRG ENABLE;
Also note that if your trigger uses IF inserting you could do only a trigger BEFORE INSERT.