Filtering Data in SQL: A Beginner’s Guide to WHERE, AND, LIKE and Friends

When you first start writing SQL, pulling data from a database feels like opening a firehose. A basic SELECT * FROM patients; returns every single row in your table. But in real-world data analysis, you rarely want everything at once. You need to target specific insights—such as finding uninsured patients, tracking down records with partial email... Weiterlesen: Filtering Data in SQL: A Beginner’s Guide to WHERE, AND, LIKE and Fri…