ISO/IEC 19075-5
Information technology — Guidance for the use of database language SQL — Part 5: Row pattern recognition
| Organization: | ISO |
| Publication Date: | 1 August 2021 |
| Status: | active |
| Page Count: | 86 |
| ICS Code (Languages used in information technology): | 35.060 |
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.
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