MySQL Reference

The MySQL Cheat Sheet Every Developer Bookmarks

Name: The MySQL Cheat Sheet Every Developer Bookmarks
Brand: Cheat Sheet Haven
Price: 9.00 USD
Availability: InStock

Every SELECT pattern, JOIN type, aggregate function, and index strategy — organised by what you're actually trying to do. Stop staring at a blank query editor and keep the complete SQL reference at your fingertips.

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SELECT QUERIES

SELECT * FROM tableFetch all rows

WHERE col = valFilter rows

ORDER BY col DESCSort results

JOINS

INNER JOIN t ONMatching rows both

LEFT JOIN t ONAll left + matches

GROUP BY col HAVINGAggregate filter

MODIFYING DATA

INSERT INTO t VALUESAdd row

UPDATE t SET col=vModify rows

DELETE FROM t WHERERemove rows

What's inside the MySQL Cheat Sheet

8 sections covering every aspect of MySQL from basic SELECT queries to indexes, transactions and query optimisation.

🔍

SELECT with WHERE / ORDER / LIMIT

Write precise queries that return exactly the data you need, in the right order.

SELECT with column aliases
WHERE with AND, OR, IN, BETWEEN, LIKE
ORDER BY (ASC/DESC) and NULLS
LIMIT and OFFSET for pagination

🔗

All JOIN Types (INNER/LEFT/RIGHT/CROSS)

Combine data from multiple tables confidently with every JOIN type explained.

INNER JOIN — only matching rows
LEFT JOIN — all left, matching right
RIGHT JOIN — all right, matching left
CROSS JOIN and self joins

📊

Aggregate Functions (COUNT/SUM/AVG)

Summarise and group your data with aggregate functions and the HAVING clause.

COUNT(*), COUNT(col), COUNT(DISTINCT)
SUM, AVG, MIN, MAX
GROUP BY with multiple columns
HAVING vs WHERE for aggregates

✏️

INSERT, UPDATE, DELETE

Modify your data safely with the correct syntax for every write operation.

INSERT INTO with single and multi-rows
INSERT ... ON DUPLICATE KEY UPDATE
UPDATE with WHERE (never forget!)
DELETE with LIMIT and subqueries

🏗️

CREATE TABLE & ALTER TABLE

Design and modify table schemas with the correct column types and constraints.

Column types (INT, VARCHAR, TEXT, DATE…)
NOT NULL, DEFAULT, AUTO_INCREMENT
ALTER TABLE (add/drop/modify columns)
RENAME TABLE and DROP TABLE

⚡

Indexes & Keys (PRIMARY/FOREIGN/INDEX)

Speed up queries and maintain data integrity with the right index strategies.

PRIMARY KEY and UNIQUE constraints
FOREIGN KEY with ON DELETE/UPDATE
Creating and dropping indexes
Composite index strategy

🔒

Transactions & ACID

Keep your data consistent with proper transaction management.

START TRANSACTION, COMMIT, ROLLBACK
SAVEPOINT and ROLLBACK TO
Isolation levels explained
Deadlock avoidance patterns

🚀

Performance Tips & EXPLAIN

Diagnose and fix slow queries with the right tools and patterns.

EXPLAIN and EXPLAIN ANALYZE
Reading query execution plans
Index usage and covering indexes
Avoiding N+1 and full table scans

Who this cheat sheet is for

✓Backend developers who write SQL but still look up the exact JOIN syntax every time
✓Developers building database-driven applications who need a fast query reference
✓Data analysts querying production databases who need aggregate and grouping reference
✓PHP and Python developers working with MySQL backends
✓Developers optimising slow queries who need EXPLAIN and indexing guidance

The MySQL Cheat Sheet Every Developer Bookmarks

What's inside the MySQL Cheat Sheet

SELECT with WHERE / ORDER / LIMIT

All JOIN Types (INNER/LEFT/RIGHT/CROSS)

Aggregate Functions (COUNT/SUM/AVG)

INSERT, UPDATE, DELETE

CREATE TABLE & ALTER TABLE

Indexes & Keys (PRIMARY/FOREIGN/INDEX)

Transactions & ACID

Performance Tips & EXPLAIN

Who this cheat sheet is for

What you get

Get the MySQL Cheat Sheet now

The MySQL Cheat Sheet Every Developer Bookmarks

What's inside the MySQL Cheat Sheet

SELECT with WHERE / ORDER / LIMIT

All JOIN Types (INNER/LEFT/RIGHT/CROSS)

Aggregate Functions (COUNT/SUM/AVG)

INSERT, UPDATE, DELETE

CREATE TABLE & ALTER TABLE

Indexes & Keys (PRIMARY/FOREIGN/INDEX)

Transactions & ACID

Performance Tips & EXPLAIN

Who this cheat sheet is for

What you get

Get the MySQL Cheat Sheet now

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