DEFINITION :- Set operation are used to combine the result(rows) of two or more select queries into a single result . unlike the join where we needed the key col here ...
('ANATR', 'Ana Trujillo Emparedados y helados', 'Ana Trujillo', 'Mexico D.F.', NULL, 'Mexico', '(5) 555-4729', 'anatr@gmail.com'); ...
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 ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results