Mar 12, 2025 · In this guide, we will see a comprehensive cheat sheet for essential SQL operations, offering a practical reference for tasks ranging from database creation to advanced data handling techniques.

A quick reminder of all relevant SQL queries and examples on how to use them. This repository is constantly being updated and added to by the community. Pull requests are welcome. Enjoy!

Examples: SELECT name FROM islands WHERE id IN (4, 8, 15, 16, 23, 42); SELECT * FROM products WHERE category IN ("eBooks", "Books", "Comics"); SELECT title FROM courses WHERE topic IN ("JavaScript", "Databases", "CSS"); SELECT * FROM campaigns WHERE medium IN ("email", "blog", "ppc");

SQL Statement Syntax; AND / OR: SELECT column_name(s) FROM table_name WHERE condition AND|OR condition: ALTER TABLE: ALTER TABLE table_name ADD column_name datatype. or. ALTER TABLE table_name DROP COLUMN column_name: AS (alias) SELECT column_name AS column_alias FROM table_name. or. SELECT column_name FROM table_name AS table_alias: BETWEEN ...

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May 10, 2024 · Need to brush up on your SQL commands? Get our comprehensive SQL cheat sheet here! Whether you're a veteran or a beginner, you'll find this sheet invaluable.

Oct 16, 2024 · This cheatsheet provides practical examples for commonly used SQL commands, focusing on SELECT queries, joins, updates, and more. Let’s dive right into it! 1. Basic SQL Commands. 2. JOIN Operations. 3. GROUP BY and Aggregation Functions. 4. INSERT, UPDATE, and DELETE. 5. Advanced Queries. WHEN salary > 70000 THEN 'High' .

Feb 24, 2025 · SQL (Structured Query Language) is essential for data analysis as it enables efficient data retrieval, manipulation, and transformation. It allows analysts to filter, sort, group, and aggregate large datasets, making data-driven decision-making easier.

Dec 13, 2024 · In case you want to preview the SQL interview cheat sheet, here you go: What's Inside the SQL Cheat Sheet? SQL Basics: Quick refreshers on SELECT, WHERE, and JOINs. Advanced Topics: Master Window Functions, CTEs, and Subqueries. Optimization Tips: Learn how to write efficient queries. Practice Questions: Common SQL interview scenarios.

Whether you need a quick reference for major SQL concepts before an interview, or you want to level-up your existing SQL skills, our SQL cheat sheet is the ideal starting point. Plus, we’ve broken it down into 11 essential SQL topics to help you …