Check if a user-defined type already exists in PostgreSQL

Question

Say I have created some user-defined types in the DB,

i.e. CREATE TYPE abc ...

Is it then possible to determine if the user-defined type exists

Answer 1

Indeed, Postgres does not have CREATE OR REPLACE functionality for types. So the best approach is to drop it:

DROP TYPE IF EXISTS YOUR_TYPE;
CREATE TYPE YOUR_TYPE AS (
    id      integer,
    field   varchar
);

Simple solution is always the best one.