Lesson plan
Set operations (SQL)
Set operations in SQL is a type of operations which allow the results of multiple queries to be combined into a single result set. Set operators in SQL include UNION , INTERSECT , and EXCEPT , which mathematically correspond to the concepts of union, intersection and set difference.
Article summary
Set operations in SQL is a type of operations which allow the results of multiple queries to be combined into a single result set. Set operators in SQL include UNION , INTERSECT , and EXCEPT , which mathematically correspond to the concepts of union, intersection and set difference.
Key claims
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.