Beginner’s Guide to SQL: DDL, DML, WHERE & CASE WHEN

Table of Contents Overview DDL vs DML Core SQL Operations CREATE (DDL) INSERT UPDATE DELETE Filtering with WHERE IN / NOT IN LIKE BETWEEN CASE WHEN for Data Transformation Conclusion Overview If you're starting out with SQL, understanding how to create, manipulate, and query data is essential. In this guide, I walk through practical SQL examples covering: Creating tables (DDL) Managing data (DML) Filtering and transforming query results All examples are...