https://juliecodestack.github.io/tags/database/Recent content in Database on Julie's WebsiteHugoen-usTue, 10 Nov 2026 18:50:56 +0800https://juliecodestack.github.io/2026/11/10/sql_for_beginners/Tue, 10 Nov 2026 18:50:56 +0800https://juliecodestack.github.io/2026/11/10/sql_for_beginners/<p>Have you heard of SQL but aren&rsquo;t sure where to start? I felt the same way once. It turns out SQL is easier than most people imagine, especially if you already know your way around Excel.</p> <p>In this post, I&rsquo;ll give you a map of SQL: the four core operations, the keywords to perform them, and enough examples to run your first queries right away.</p> <h2 id="what-sql-actually-is">What SQL actually is</h2> <p>SQL is not a database. I used to think it was, because of the names of database management systems like SQLite and MySQL.</p>