Analicé qué instructores aparecen más en el Top 5 usando CTEs y DENSE_RANK. Respuesta paso a paso: sqlenvivo.com/respuesta-inst… #SQLTips #SQLPractice #DataSkills #QueryOptimization #DataProblems #SQL #answers

You know what? COALESCE is your best friend in SQL. It replaces NULL values with something useful so your math doesn't break😉. #SQLTips #Database

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Cleaning data isn’t glamorous, but it’s where 80% of insights come from 🧹 Quick tip: Always check for duplicate entries and inconsistent formatting before analysis - it saves hours later. #DataCleaning #SQLTips #Analytics

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🚀 Day 1/30 I just analysed a sales dataset and here’s what I found 👇 📊 Total Revenue: $34.42K 📈 Growth: +8.7% this month 🏆 Best Month: July – $3,930 💻 Top Product: Laptop Pro 15 Data tells a story… are you listening? 👀 #DataAnalytics #PowerBI #SQLTips #DataChallengeopx8JZ0

🚀 I’m starting a 30-day Data Analytics challenge! Each day, I’ll be sharing insights, tutorials, mini-projects, tips, and motivational lessons to grow as a data analyst — and hopefully help others along the way. Follow along! 📊 #DataAnalytics #PowerBI #SQLTips #DataJourney

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Running a query and seeing duplicates everywhere? 😬 Quick fix: SELECT DISTINCT or aggregate your results. Less clutter, more insights. 🗄️ #SQLTips

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@databaseschool Plan, normalize, index, secure—avoid common mistakes for scalable, consistent performance. Great advice. 📊✅🔧 #DatabaseDesign #SQLTips #DataModeling #PerformanceTuning #TechBestPractices #DatabaseManagement

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Window functions = SQL's secret weapon Unlike GROUP BY, they calculate ACROSS rows without collapsing them. Patterns: ROW_NUMBER() → rank rows LAG() → compare to previous row #AdvancedSQL #DataAnalytics #SQLTips