Answer a question

Using the following:

CREATE TYPE user_types AS ENUM ('it', 'accounting', 'processes');

CREATE TABLE my_users
(
    my_user_id integer NOT NULL,
    my_user_name text NOT NULL,
    my_user_type user_types
)

I want to change one of the user types:

ALTER TYPE user_types RENAME ATTRIBUTE it TO softwaredev CASCADE;

I get a error:

ERROR: relation "user_types" does not exist
SQL state: 42P01

I tried adding quotes and backticks but that didn't help. The example I wrote down here is not the exact code, my type has 31 characters, but I don't think the length of my type is the issue.

I'm using postgres version 9.6.2

Answers

ALTER TYPE ... RENAME ATTRIBUTE only works for composite types, not for ENUM types.

While there is a way to add new entries to such a type (ALTER TYPE ... ADD VALUE 'new_value'), there is no supported way to remove or rename an enumeration entry.

If you are not afraid to mess with the catalogs, you can try as superuser:

UPDATE pg_enum
SET enumlabel = 'softwaredev'
WHERE enumtypid = 'user_types'::regtype
  AND enumlabel = 'it';

From PostgreSQL v10 on, you can use

ALTER TYPE ... RENAME VALUE ... TO ...
# postgresql
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