Databases
9 cheatsheets covering sql、database、查询、db、mysql and more
SQL Cheatsheet - Common Query Syntax & Examples
One-page SQL reference: SELECT, JOIN, aggregation, subqueries, window functions, transactions and DDL, with runnable examples. Quick lookup, copy directly.
MySQL Cheatsheet - MySQL Command Reference
One-page MySQL command reference covering database & table management, CRUD operations, index optimization, user privileges, backup & recovery, and replication. Quick lookup, copy and paste.
PostgreSQL Cheatsheet - PostgreSQL Command Reference
One-page PostgreSQL command reference covering connection & role management, database & table operations, query analysis, lock & transaction troubleshooting, backup & recovery, and streaming replication. Quick lookup, copy and paste.
Redis Cheatsheet - Redis Command Reference
One-page Redis command reference covering string & data structure operations, key space management, persistence configuration, memory troubleshooting, slow query monitoring, and cluster & replication. Quick lookup, copy and paste.
MongoDB Cheatsheet - MongoDB Command Reference
One-page MongoDB quick reference with 43+ common commands across 6 grouped sections (mongodb, nosql). Quick lookup, copy and run.
Neo4j Cypher Cheatsheet - Neo4j Graph Database Command Reference
One-page Neo4j Cypher quick reference with 40+ common commands across 6 grouped sections (neo4j, cypher). Quick lookup, copy and run.
SQL JOIN Cheatsheet - SQL JOIN Query Reference
One-page SQL JOIN quick reference with 41+ common commands across 8 grouped sections (sql, join). Quick lookup, copy and run.
Knex.js Cheatsheet - Knex SQL Query Builder Reference
One-page Knex.js quick reference with 50+ common commands across 8 grouped sections (knex, sql, nodejs). Quick lookup, copy and run.
SQLite Cheatsheet - SQLite Database Command Reference
One-page SQLite database reference covering database creation, table operations, CRUD, indexes and constraints, transactions, import/export, and sqlite3 CLI. Find fast, copy directly.