Operators

Lesson in the SQL Roadmap · Stage 2: Basic SQL Syntax

Last updated 14 September 2026

What is Operators?

SQL operators are symbols or keywords used to perform operations on data within a database. They are essential for constructing queries that filter, compare, and manipulate data. Common types of operators include arithmetic operators (e.g., +, -, *, /), which perform mathematical calculations; comparison operators (e.g., =, !=, <, >), used to compare values; logical operators (e.g., AND, OR, NOT), which combine multiple conditions in a query; and set operators (e.g., UNION, INTERSECT, EXCEPT), which combine results from multiple queries. These operators enable precise control over data retrieval and modification.

Study this in the interactive course See the whole SQL roadmap

Free resources to learn Operators

ArticleSQL Operators: 6 Different Types

Operators: common questions

Can I learn Operators in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Operators in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Operators tutorial for beginners?

It is lesson 8 of 112 in the free SQL roadmap, in stage 2, Basic SQL Syntax. If you are new to SQL, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.