SQL Learning Journey: Data Filtering and Aggregations

🚀 Day 2 of My SQL Learning Journey Today I learned about the WHERE clause in SQL. 👉 WHERE is used to filter data based on specific conditions. Basic syntax: SELECT column_name FROM table_name WHERE condition; ✔ Helps in retrieving only the required data ✔ Can be used with operators like =, >, <, AND, OR 💡 Learning WHERE made me realize how powerful SQL is when working with large datasets. Excited to keep improving! 🔥 Next: INSERT statement 👀 #SQL #LearningJourney #Beginner #DataAnalytics #Day2 #LearnInPublic

Most beginners ignore this in SQL… 👇 Data types might look basic, but they decide how your data is stored, processed, and optimized. Right choice = better performance ⚡ Wrong choice = slow queries + messy data If you're learning SQL, don’t skip this. Basics build everything. #SQL #DataAnalytics #Database #TechSkills #LearningInPublic #Beginners #CareerGrowth #SQLLearning #DataScienceJourney #ProgrammingBasics #TechCareers #Upskill #Students

🔥 Post 1 (Day 2 – SELECT Statement Basics) 💡 Day 2 of My SQL Learning Journey Today I learned the most important part of SQL — SELECT statement 🚀 👉 SELECT statement is used to fetch data from a database. 📌 Basic syntax: SELECT column1, column2 FROM table_name; 📊 Example: SELECT name, age FROM students; ✨ This simply means: “students table se name aur age data lao” 💬 SQL ka real power yahi se start hota hai! 👉 Question: Have you tried writing your first SQL query yet? #SQL #DataAnalytics #LearningJourney #Day2 #BeginnerSQL

🚀 Day 27/100 – LeetCode SQL Challenge 📌 Problem Solved: Biggest Single Number Today’s challenge was about identifying a number that appears only once in a dataset and then finding the largest among them. 🔍 Key Concept: A single number means it appears exactly once. I used: ✔️ GROUP BY to group numbers ✔️ HAVING COUNT(num) = 1 to filter unique values ✔️ MAX() to find the largest among them 💡 What I Learned: Difference between WHERE and HAVING How to filter aggregated data using HAVING Writing optimized queries without unnecessary subqueries Importance of understanding problem keywords like "only once" 🧠 Approach: Count frequency of each number Filter numbers with count = 1 Return the maximum of those numbers 📈 This problem strengthened my understanding of aggregation and filtering in SQL — very useful! 🔥 Consistency is the key — one step closer to mastering SQL! #Day27 #LeetCode #SQL #100DaysOfCode #CodingJourney #PlacementsPreparation #DataAnalytics

SQL Tip of the Day: CASE WHEN THEN Turn raw data into meaningful insights using conditional logic! 💡 Think of it like IF-ELSE in SQL #SQL #DataAnalytics #Learning #InterviewPrep #DataScience #NewtonSchool

My First SQL Query Took 30 Minutes It was simple. But I had no idea what I was doing. Now it takes 2 minutes. The difference? Not intelligence. Just repetition. If you're learning SQL: You're not behind. You're exactly where you should be! #SQL #DataAnalytics #Learning

🚀 Learning never stops! Currently exploring Advanced SQL concepts like Window Functions, CTEs, and complex joins—turning messy data problems into structured solutions. Getting better, one query at a time 💪 #SQL #DataAnalytics #LearningJourney

This SQL Cheat Sheet Saved Me Hours of Googling ⌛ When I first started learning SQL, I constantly forgot the syntax. Writing a simple JOIN or GROUP BY felt like solving a puzzle every time. I’d search the same queries again and again and it broke my focus. This single page saves time and reduces confusion. ♻️ Repost and Share it with your SQL buddies. #SQL #DataAnalytics #DataScience #SQLforBeginners #SQLCheatSheet #TechTips #CareerInData #DatabaseDesign #InterviewPrep #LearnSQL

🚀 Understanding DDL in SQL (Data Definition Language) After learning SQL command classification, I explored DDL in detail. DDL is used to define and manage the structure of a database. It mainly focuses on creating and modifying database objects. 🔹 CREATE – To create the New tables or databases 🔹 ALTER – To modify the existing table structure 🔹 RENAME – To change the table or object name 🔹 DROP – To delete the tables and databases 🔹 TRUNCATE – To remove the data from the table DDL commands help in designing and organizing the database efficiently. Learning step by step is helping me build strong SQL fundamentals 💪 #SQL #DDL #Database #Learning #StudentLife

🚀 Day 1 of My SQL Learning Journey Today I learned the basics of the SELECT statement in SQL. 👉 SELECT is used to retrieve data from a database. Basic syntax: SELECT column_name FROM table_name; ✔ SELECT * → used to get all columns ✔ SELECT column_name → used to get specific data 💡 This is the first step to working with data and understanding databases. Excited to learn more! 🔥 Next: WHERE clause 👀 #SQL #LearningJourney #Beginner #DataAnalytics #Day1 #LearnInPublic