The UNION operator is used to combine the result-set of two or more SELECT statements. The UNION operator automatically removes duplicate rows from the result set.

Sep 25, 2018 · There are four basic Set Operators in SQL Server: The Union operator combines the results of two or more queries into a distinct single result set that includes all the rows that belong to …

The UNION operator in SQL selects fields from two or more tables. In this tutorial, you will learn about the SQL UNION operator with the help of examples.

Nov 17, 2025 · The SQL UNION operator is used to combine the result sets of two or more SELECT queries into a single output. It removes duplicate rows and returns only unique records from all …

Nov 18, 2025 · The following examples use UNION to combine the results of the same table to demonstrate the effects of ALL and parentheses when using UNION. The first example uses UNION …

This tutorial shows you how to use the SQL UNION operator to combine the result sets of two queries into a single result set.

There are (at least) three ways to combine results of queries in SQL: JOIN, UNION, and INTERSECT. They serve different purposes: Use UNION when you want to add more rows to your results. Use …

To include duplicates, use the UNION ALL operator. In this tutorial, we will go through SQL UNION Operator, its syntax, and how to use this operator in SQL statements, with the help of well detailed …

In this blog, we’ll explore the UNION operator in depth, covering its syntax, use cases, and practical applications with clear examples. By the end, you’ll be using UNION confidently to unify your query …

In this example, we are selecting the first name, last name, and email columns from two different tables, customers and employees. The UNION operator combines the results of the two SELECT …