Database Error Messages

Change the constraint specification so as to widen the existing constraints.To narrow the constraints or to change the type of the attribute, you must drop the attribute and add it with new constraints or new type. In that case you must also take appropriate steps to preserve your existing data based on the type (if you want to preserve it).Typically this will involve backing up the data and restoring it after the ALTER TYPE.

Change the constraint specification so as to widen the existing constraints.To narrow the constraints or to change the type of the attribute, you must drop the attribute and add it with new constraints or new type. In that case you must also take appropriate steps to preserve your existing data based on the type (if you want to preserve it).Typically this will involve backing up the data and restoring it after the ALTER TYPE.

Change the constraint specification so as to widen the existing constraints.To narrow the constraints or to change the type of the attribute, you must drop the attribute and add it with new constraints or new type. In that case you must also take appropriate steps to preserve your existing data based on the type (if you want to preserve it).Typically this will involve backing up the data and restoring it after the ALTER TYPE.