Topic 12430 min readStructured Tutorial
SQL Set Operators Use Cases
Quick Answer
SQL set operators such as UNION, INTERSECT, and EXCEPT are used to combine or compare results from multiple SELECT queries. They help retrieve distinct or common records across datasets, making them essential for tasks like merging data, finding overlaps, or differences between tables.
Learning Objectives
- Understand the purpose of SQL set operators and when to use each.
- Learn practical scenarios for UNION, INTERSECT, and EXCEPT operators.
- Write SQL queries that combine or compare datasets effectively.
Introduction
SQL set operators allow you to combine or compare results from multiple SELECT statements.
They are powerful tools for data analysis, helping you find commonalities, differences, or merge datasets efficiently.
Set operations in SQL help answer questions like 'What do these datasets have in common?' or 'What is unique to one dataset?'
