Why Your Query Is Slow! Missing Index Explained 🚀 #shortvideo #viral

Ever noticed your database query running super slow? 🤔 99% chances are… you’re missing an index! In this 30-second SpanCoders tech short, we quickly explain: • What causes a SQL query to slow down • Why missing indexes destroy performance • How databases scan entire tables without an index • How adding the right index speeds up queries instantly • Why developers must understand indexing • Practical real-world example • Best practices for indexing (simple explanation) 💡 What is an Index? An index in a database acts like the index of a book. Instead of searching every row (full table scan), the DB jumps directly to the required data. Result → 10x to 100x faster performance ⚡ 🔥 Signs you’re missing an index • Queries taking seconds instead of milliseconds • Slow JOIN operations • WHERE conditions checking many rows • High CPU usage on the database • Query plan shows “TABLE SCAN” SELECT * FROM users WHERE email = 'test@mail.com'; and email column is NOT indexed… The DB will search every single row → very slow 😞 Add an index → query becomes instant 🚀 🎯 Tip: Create indexes on columns used in • WHERE • JOIN • ORDER BY • GROUP BY ⚠️ But avoid creating too many indexes — they slow down insert/update operations. This short video explains indexing in the simplest way possible using real examples. If you’re learning backend, full stack, SQL, MySQL, PostgreSQL, or MongoDB — this is must-know knowledge. 👇 Follow SpanCoders for more: • Tech facts • Coding concepts • Backend basics • JavaScript, React, Node • Database optimization • Full-stack tips in 30 seconds! Tech made simple in seconds! ⚡ Subscribe & follow SpanCoders for daily Shorts. #SQL #Database #Indexing #MissingIndex #SlowQuery #QueryOptimization #BackendTips #DeveloperFacts #TechFacts #ProgrammingShorts #SpanCoders #TechInSeconds #LearnCoding sql slow query, why query slow, sql index, what is index in sql, missing index sql, mysql slow query fix, postgresql indexing, db optimization shorts, backend developer facts, query plan table scan, index vs no index example, span coders shorts, tech facts hindi, programming tips