Information technology — Guidance for the use of database language SQL — Part 7: Polymorphic table functions (Adopted ISO/IEC 19075-7:2021, first edition, 2021-08)
Standards development within the Information Technology sector is harmonized with international standards development. Through the CSA Technical Committee on Information Technology (TCIT), Canadians serve as the SCC Mirror Committee (SMC) on ISO/IEC Joint Technical Committee 1 on Information Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO member body for Canada and sponsor of the Canadian National Committee of the IEC.
For brevity, this Standard will be referred to as CSA ISO/IEC 19075-7 throughout.
The International Standard was reviewed by the CSA TCIT under the jurisdiction of the CSA Strategic Steering Committee on Information and Communications Technology and deemed acceptable for use in Canada. This Standard has been formally approved, without modification, by the Technical Committee and has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.
This document describes the definition and use of polymorphic table functions in SQL.
The Report 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.