SQL Cheat Sheet | Quick Reference for SQL Server, MySQL & PostgreSQL | Printable A4 PDF

Stop searching for the same syntax over and over. This SQL cheat sheet puts the queries, joins and functions you use every day into one clear, printable reference, written by a working SQL developer.

It's ideal for beginners learning SQL, analysts writing queries every day, and developers who switch between databases.

What's included (5 pages)

• Cover page
• Querying Basics: the order SQL runs a query, SELECT, returning the first rows, comparison operators, WHERE filters and wildcards, sorting, NULL gotchas and comments.
• Joins & Aggregation: visual join diagrams, join syntax, finding rows with no match, self joins, aggregate functions, GROUP BY, WHERE vs HAVING, and UNION, INTERSECT and EXCEPT.
• Intermediate Techniques: CASE, subqueries, EXISTS, CTEs, handy functions, window functions such as ROW_NUMBER, RANK, LAG and LEAD, running totals, the latest row per group, and filtering dates safely.
• Changing Data & Structure: INSERT, UPDATE and DELETE, transactions, CREATE TABLE, ALTER TABLE, indexes, and a table showing how SQL Server, MySQL and PostgreSQL differ.

Features

• Instant download: nothing will be posted to you
• A4 PDF, which also prints on US Letter if you choose "Fit to page"
• Colour-highlighted code examples that are easy to scan
• Works on screen or printed out and pinned by your desk
• Covers SQL Server, MySQL and PostgreSQL

Working mainly in SQL Server?

A dedicated T-SQL Cheat Sheet is also available in my shop, covering variables, temp tables, APPLY, MERGE, error handling and performance tuning.

Please note

This is a digital product and no physical item will be sent. The file is for personal use only and may not be shared, resold or redistributed.