SQL UNIONS

Опубликовано: 01 Апрель 2023
на канале: SQL Learning Resources: Dr. Cecelia Allison

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SQL UNIONS

This video demonstrates how to use SQL Unions in SQL Server. SQL Unions in SQL Server include the UNION and UNION ALL operators. SQL Unions in SQL are very powerful queries for extracting data.

In SQL Server, the UNION operator is used to combine the results of two or more SELECT statements into a single result set. The UNION operator removes duplicate rows from the result set. If you want to include duplicate rows, you can use the UNION ALL operator.

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