📚 Mastering SQL: A Step-by-Step Guide 🚀 Learn the language that powers every major data system. ✅ 1️⃣ DDL – Data Definition Language 🏗️ CREATE – Build databases and tables DROP – Remove database objects ALTER – Modify table structures RENAME – Change object names ✅ 2️⃣ DML – Data Manipulation Language 📊 INSERT – Add new records UPDATE – Modify existing data DELETE – Remove records ✅ 3️⃣ DQL – Data Query Language 🔍 SELECT – Fetch records JOIN – Combine tables WHERE, GROUP BY, HAVING, ORDER B

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SQL文の基本、SELECT、INSERT、UPDATE、DELETE文の解説 | ポテパンスタイル

Basic SQL Commands in Database Management Systems (DBMS)