Set operations (SQL)
Type of operation in SQL / From Wikipedia, the free encyclopedia
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Set operations in SQL is a type of operations which allow the results of multiple queries to be combined into a single result set.[1]
This article includes a list of general references, but it lacks sufficient corresponding inline citations. (July 2022) |
Set operators in SQL include UNION
, INTERSECT
, and EXCEPT
, which mathematically correspond to the concepts of union, intersection and set difference.