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What is MySQL Set Operators Explained about?

This document provides an overview of set operators that can be used to combine multiple SQL queries. It describes UNION, UNION ALL, INTERSECT, and MINUS operators. UNION returns rows that are in one or both queries while eliminating duplicates. UNION ALL returns all rows, including duplicates. INTERSECT returns rows that are common to both queries. MINUS returns rows that are in the first query but not the second. Examples are provided using employee and job history tables to demonstrate the output of each

Author

Long Nguyen

Language

EN