Question

Executing SQL script in server

ERROR: Error 1067: Invalid default value for ‘Users_Created’

CREATE  TABLE IF NOT EXISTS `kwestionariusz_db`.`Companies` (
  `CompanyId` INT UNSIGNED NOT NULL AUTO_INCREMENT ,
  `Created` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ,
  `Name` TEXT NOT NULL ,
  `Users_UserId` INT UNSIGNED NOT NULL ,
  `Users_Created` TIMESTAMP NULL DEFAULT NULL ,
  PRIMARY KEY (`CompanyId`, `Created`, `Users_UserId`, `Users_Created`) ,
  INDEX `fk_Companies_Users1` (`Users_UserId` ASC, `Users_Created` ASC) ,
  CONSTRAINT `fk_Companies_Users1`
    FOREIGN KEY (`Users_UserId` , `Users_Created` )
    REFERENCES `kwestionariusz_db`.`Users` (`UserId` , `Created` )
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB

So, basically, what did I did wrong? I don’t want Users_Created to be updated while creating Company, this would break the relation. Also – is Companies.Created going to be updated while changing e.g. Companies.EMail? I wouldn’t want that either, obviously, but making foreign key a null-able is kind of wrong anyway, right? So what should I do?

Answer 1

The Users_Created column is a part of the primary key. Primary keys cannot contain nullable columns.