Using User-Defined Casts

Implicit and explicit casts are owned by the users who create them. They govern casts and conversions between user-defined data types and other data types. Developers of user-defined data types must create certain implicit and explicit casts and the functions that are used to implement them. The casts allow user-defined types to be expressed in a form that clients can manipulate.

For information about how to register and use implicit and explicit casts, see the CREATE CAST statement in the HCL OneDB™ Guide to SQL: Syntax and the HCL OneDB Database Design and Implementation Guide.