I have a Postgres 8.4 table with columns that are of type "character varying", but I want to convert them to an enum type.
When trying to alter the table
ALTER TABLE logs ALTER COLUMN interface_type TYPE interface_types
I get an error
default for column "interface_type" cannot be cast to type interface_types
The default value for the column IS a text version of a value in the enum types. So it should be possible, though I've had no luck googling for the solution.
I assume that I need to define a cast for it. How?