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sklademVydáno: 2021-09-10
BS ISO/IEC 19075-5:2021
Information technology. Guidance for the use of database language SQL Row pattern recognition
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| Označení normy: | BS ISO/IEC 19075-5:2021 |
| Počet stran: | 88 |
| Vydáno: | 2021-09-10 |
| ISBN: | 978 0 539 13082 9 |
| Status: | Standard |
Popis
BS ISO/IEC 19075-5:2021
This standard BS ISO/IEC 19075-5:2021 Information technology. Guidance for the use of database language SQL is classified in these ICS categories:
- 35.060 Languages used in information technology
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.