Question

I have trouble defining a trigger for a MySQL database. I want to change a textfield before inserting a new row (under a given condition). This is what I have tried:

CREATE TRIGGER add_bcc BEFORE INSERT ON MailQueue FOR EACH ROW BEGIN   IF (NEW.sHeaders LIKE "[e-mail]%") THEN     SET NEW.sHeaders = NEW.sHeaders + "BCC:[e-mail]";   END IF; END;  

But always I get the error "wrong syntax". I got stuck, what am I doing wrong? I’m using MySQL 5.0.51a-community

BTW: Creating an empty Trigger like this works fine:

CREATE TRIGGER add_bcc BEFORE INSERT ON MailQueue FOR EACH ROW BEGIN END;  

But this fails, too:

CREATE TRIGGER add_bcc BEFORE INSERT ON MailQueue  FOR EACH ROW BEGIN   IF 1=1 THEN   END IF;  END; 

It’s my first time to use stackoverflow.com, so I’m very excited if it is helpful to post something here 🙂

Answer 1

You need to change the delimiter – MySQL is seeing the first ‘;’ as the end of the CREATE TRIGGER statement.

Try this:

/* Change the delimiter so we can use ';' within the CREATE TRIGGER */ DELIMITER $$  CREATE TRIGGER add_bcc BEFORE INSERT ON MailQueue FOR EACH ROW BEGIN   IF (NEW.sHeaders LIKE '[e-mail]%') THEN     SET NEW.sHeaders = NEW.sHeaders + 'BCC:[e-mail]';   END IF; END$$ /* This is now 'END$$' not 'END;' */  /* Reset the delimiter back to ';' */ DELIMITER ;