constant NAMES
Ruby on Rails 4.1.16
Since v4.0.13 Last seen in v4.1.16Available in: v4.0.13 v4.1.16
When the PG adapter connects, the pg_type table is queried. The key of this hash maps to the typname column from the table. type_map is then dynamically built with oids as the key and type objects as values.