World of SQL
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Learn. Query. Automate. | Daily SQL tips & data wisdom.
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SQL is older than most programming languages. Yet every new data tool still runs on it. Some tech ages, SQL compounds. #SQL #DataEngineering
Most analysts learn SQL to query data. The best learn it to understand business logic. That’s where real impact happens. #SQL #DataAnalytics #LearnSQL #DataScience #TechTwitter #Analytics
🧠 In SQL, COUNT(*) counts rows. COUNT(column) counts values. COUNT(DISTINCT column) counts uniqueness. #SQL #LearnSQL #DataAnalytics #DataEngineering
The moment you stop fearing errors in SQL, is the moment you start learning fast. Each ERROR is a teacher, not a failure. 🧠 #SQL #LearnSQL #Data
💡 SQL Quiz: What does this query return? SELECT COUNT(*) FROM employees WHERE salary > 50000; A) Number of employees B) Average salary C) Highest salary Comment your answer 👇
🧠 How SQL Actually Thinks You write a query in one order. But SQL reads it differently, step by step. 1️⃣ FROM → find the tables 2️⃣ WHERE → filter the rows 3️⃣ GROUP BY → group what’s left 4️⃣ HAVING → filter the groups 5️⃣ SELECT → pick what to show 6️⃣ ORDER BY → sort the…
💡 Ever wondered what SQL really stands for? S – Structured → Organized and predictable. Data lives in rows and columns, like a digital spreadsheet. Q – Query → A question to the database. You ask for what you want - SELECT, INSERT, UPDATE, DELETE. L – Language → It’s not…
💾 Learning SQL is like learning to think in data. 1⃣ Start simple - SELECT and WHERE. 2⃣ Learn to connect - JOINs and relationships. 3⃣ Master logic - subqueries, CTEs, window functions. Each query makes you sharper. Each result teaches you patience. Keep querying. Keep…
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