How to create a column with default value

NULL

?

In your model you mark the field as optional with a

?

model SomeEntity {
  id        String    @id @default(dbgenerated("gen_random_uuid()")) @db.Uuid
  name      String?   @db.VarChar
}

depending on the underlying database technology you use may change things but for postgres

If no default value is declared explicitly, the default value is the null value

got it, thankkkou!