> ## Documentation Index
> Fetch the complete documentation index at: https://docs.oxla.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

Set operations are operations used to manipulate and analyze sets. It includes the following operations:

1. [**Union**](/sql-reference/sql-clauses/set-operations/union): Combines two or more sets to create a new set containing all unique elements from the input sets.
2. [**Intersect**](/sql-reference/sql-clauses/set-operations/intersect): Yields a new set with elements common to all input sets.
3. [**Except**](/sql-reference/sql-clauses/set-operations/except): Generates a set containing elements from the first set that are not present in the second set.

These operations allow for comparisons, combinations, and distinctions among sets in various contexts.