Introduction to PL/SQL - SlideServe

The Complete Beginner’s Guide to SQL Fundamentals

Manish | Sql & Database Developer & Trainer on Instagram: "Write SQL SELECT queries that actually perform. Most beginners use SELECT * Then wonder why their queries are slow. Here’s the real issue: SELECT * loads every column into memory. Your database processes data you don’t need. Result? Slower queries and higher resource usage. Write performance-focused SQL instead: • Select only required columns • Use WHERE to filter rows early • Reduce unnecessary data processing The result: Faster SQL que

Manish | Sql & Database Developer & Trainer on Instagram: "🚀 2-Month Roadmap to Data Analyst Mastery 📊 👉 SAVE THIS to become data Pro! 👈 Otherwise, you’ll miss out on learning how to become an SQL Expert! Month 1: Week 1-2: 📚 Foundation Building: • Master the basics of statistics, SQL, and Python/R through online courses and tutorials. Focus on understanding data structures and manipulation. Week 3-4: 🔍 Dive into Data Exploration: • Practice data analysis techniques using datasets from pla