changing varchar to int

From: Ankur Kaushik <ankurkaushik(at)gmail(dot)com>
To: pgsql-admin <pgsql-admin(at)postgresql(dot)org>
Subject: changing varchar to int
Date: 2015-07-23 07:27:03
Message-ID: CALXoLqyfmWre=DC3yifOUJPtUK4vV+7LDSZzHk6ocZP1rv3rsg@mail.gmail.com
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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

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