How to restrict a column value in SQLite / MySQL

Question

I would like to restrict a column value in a SQL table. For example, the column values can only be \"car\" or \"bike\" or \"van\". My question is how do you achieve this in

Answer 1

You would use a check constraint. In SQL Server it works like this

ALTER TABLE Vehicles
ADD CONSTRAINT chkVehicleType CHECK (VehicleType in ('car','bike','van'));

I'm not sure if this is ANSI standard but I'm certain that MySQL has a similar construct.