changing varchar to int

[Ankur Kaushik <ankurkaushik@xxxxxxxxx>]

Original column

Column                   Type                                 Modifiers

model                | character varying(50)       | default NULL::character varying

Required Column

Model                   integer

=========

ALTER TABLE device ALTER COLUMN model TYPE integer USING (model::integer);

getting below error

ERROR:  default for column "model" cannot be cast automatically to type integer