ISO/IEC 9075-2:2016, Information technology — Database languages — SQL — Part 2

International Organization for Standardization. (2016). ISO/IEC 9075-2:2016, Information technology — Database languages — SQL — Part 2: Foundation (SQL/Foundation).

Type

Standard

Intellectual base

Reference work

Year

2016

Link

https://www.iso.org/standard/63556.html

Cited from

mathematics

Cited by

1 citation across 1 artifact.

Each citation links to the sentence it supports in the citing article.

Primes

• Union
  • In databases it is the SQL UNION operator, which merges the result sets of two queries into one (with UNION deduplicating and UNION ALL keeping every row — exactly the set-versus-multiset distinction)

    This sourcePart 2 (Foundation) specifies SQL's query expressions including the UNION operator (deduplicating) and UNION ALL (multiset, duplicates kept) — the set-versus-multiset distinction made operational.

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