15.00 - Similarities With The Syntax For CREATE TYPE (Structured Form) - Teradata Database

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Similarities With The Syntax For CREATE TYPE (Structured Form)

The syntax for CREATE TYPE (Distinct Form) is similar to that for the CREATE TYPE (Structured Form) statement.

The major distinguishing characteristics for distinct types are the following:

  • The AS predefined_data_type clause.
  • For CREATE TYPE (Structured Form), the corresponding clause is AS attribute_name list with an optional INSTANTIABLE specification.

  • The mandatory FINAL specification.
  • The inability to create a user‑defined constructor method signature for a distinct type.
  • Structured UDTs allow you to define constructor method signatures.