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Using Set Operators in SQL- SET Operators.sql

('ANATR', 'Ana Trujillo Emparedados y helados', 'Ana Trujillo', 'Mexico D.F.', NULL, 'Mexico', '(5) 555-4729', 'anatr@gmail.com'); ...
GitHub

Set-Operators.md

Set operators combine the results of two component queries into a single result. Queries containing set operators are called compound queries. Table 4-5 lists the SQL set operators. They are fully ...
Simon Fraser University

query-expression

A query-expression is one or more table-expressions. Multiple table expressions are linked by set operators. The following figure illustrates the relationship between table-expressions and ...