- update-type-parsers! CONN #!optional TYPE-PARSERSprocedure
As described above, type information is extracted from the system catalog whenever you initiate a new connection. However, there is a bootstrapping problem when you are defining custom data types. You must first connect before you can define your custom data types. But the type parsers do not have the information for this new type yet, so you must update them.
To do this, you can call update-type-parsers!. This procedure updates all the type parsers originally associated with connection CONN. By providing the optional TYPE-PARSERS, you can override the existing type parsers for this connection with new ones, otherwise the old ones are just refreshed.