Alter table `PersonType` add Constraint `Hej` Foreign Key (`PersonTypeID`) references `Person` (`PersonTypeID`) on delete restrict on update restrict; INSERT INTO `Person` ( `PersonID`, `PersonNumer`, `Title`, `FirstName`, `LastName`, `CompanyName`, `Active`, `PartnerReferenceID`, `ParentPersonID`, `AllowCommercial`, `Created`, `Changed`, `ChangedByPersonID`, `AgreementID`, `AgreementTypeID`, `PersonTypeID`) values( 0, 0, 'Mr.', 'Kasper', 'Sandin', 'LOL', 0, 0, 0, 0, NOW(), NOW(), 0, 0, 0, 0); INSERT INTO `PersonType` (`PersonTypeID`, `Name`, `Description`) values(0, 'CoolGuy', 'A very cool guy'); DELETE FROM `Person` WHERE 1;