Alcance
ISO/IEC TR 19075-7:2017 describes the definition and use of polymorphic table functions in SQL.ISO/IEC TR 19075-7:2017 discusses the following features of the SQL Language:- The processing model of polymorphic table functions in the context of SQL.- The creation and maintenance of polymorphic table functions.- Issues related to methods of implementing polymorphic table functions.- How polymorphic table functions are invoked by application programs.- Issues concerning compilation, optimization, and execution of polymorphic table functions.