更新错误后触发DB2

Question

This is my first time using a trigger on my website using php. What I'm trying to achieve is when the condition and location field (located in inventory table) is updated, the trigger will insert a row to LOG table.

Here is the error shown when I chenged the condition and location field :

SQL0723N An error occurred in a triggered SQL statement in trigger "DB2ADMIN.CONDITI".        
Information returned for the error includes SQLCODE "-433", 
SQLSTATE "22001" and message tokens "Condition changed from bad ". SQLSTATE=09000 SQLCODE=-723

And here is my trigger code, I created the trigger using the data studio, and it succeeded :

I'VE EDITED MY TRIGGER CODE AND LOG TABLE STRUCTURE, BUT STILL GENERATE THE SAME ERROR

CREATE TRIGGER DB2ADMIN.CONDITION_LOG AFTER UPDATE OF CONDITION, LOCATION ON DB2ADMIN.INVENTORY 
REFERENCING OLD AS o NEW AS n
FOR EACH ROW MODE DB2SQL NOT SECURED 
INSERT INTO LOG VALUES ('',CURRENT TIMESTAMP, o.CONDITION, n.CONDITION, o.LOCATION, n.LOCATION);

Answer 1

Heres a sample UPDATE TRIGGER

this may not answer you question but i think it can help you to construct a better Trigger statement:

DELIMITER $$
CREATE
    TRIGGER `blog_after_update` AFTER UPDATE
    ON `blog`
    FOR EACH ROW BEGIN
        IF NEW.deleted THEN
            SET @changetype = 'DELETE';
        ELSE
            SET @changetype = 'EDIT';
        END IF;
        INSERT INTO audit (blog_id, changetype) VALUES (NEW.id, @changetype);
    END$$
DELIMITER ;

Resource link( source )