ISO/IEC 19075-5:2021

Information technology — Guidance for the use of database language SQL — Part 5: Row pattern recognition ISO/IEC 19075-5:2021

Publication date:   Sep 1, 2021

Scope

This document discusses the syntax and semantics for recognizing patterns in rows of a table, as defined in ISO/IEC 9075-2, commonly called “SQL/RPR”.SQL/RPR defines two features regarding row pattern recognition:— Feature R010, “Row pattern recognition: FROM clause”— Feature R020, “Row pattern recognition: WINDOW clause”These two features have considerable syntax and semantics in common, the principle difference being whether the syntax is placed in the FROM clause or in the WINDOW clause.