Module postgres 

Functions

is_builtin

Returns true if the udt_name is a known PostgreSQL builtin type (i.e., not a fallback to String).

map_type

map_type_qualified

Map a PG type name to a Rust type, respecting udt_schema when present so that two schemas declaring the same name (e.g. auth.role vs billing.role) resolve to distinct Rust idents.