Yasen Ivanov Yasen Ivanov - 5 months ago 13
MySQL Question

MySQL trigger before insert - truncated incorrect DOUBLE error

I want to concatenate the new username with string and I have the following trigger:

CREATE DEFINER=`root`@`localhost` TRIGGER `rating_platform`.`admins_BEFORE_INSERT` BEFORE INSERT ON `admins` FOR EACH ROW
BEGIN
SET NEW.username = NEW.username + "test";
END


I receive this error:


ERROR 1292: 1292: Truncated incorrect DOUBLE value: 'test'


What am I doing wrong?

Answer

Use CONCAT function:

SET NEW.username = CONCAT(NEW.username,"test");