ISO/IEC 19075-5:2021

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Information technology - Guidance for the use of database language SQL - Part 5: Row pattern recognition

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ISO/IEC 19075-5:2021

Information technology - Guidance for the use of database language SQL - Part 5: Row pattern recognition

PUBLISH DATE 2021
ISO/IEC 19075-5:2021

This document discusses the syntax and semantics for recognizing patterns in rows of a table, as defined in ISO/IEC 9075-2, commonly called β€œSQL/RPR”.

SQL/RPR defines two features regarding row pattern recognition:

  • Feature R010, β€œRow pattern recognition: FROM clause”
  • Feature R020, β€œRow 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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