#Sql Not In

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#Sql Not In Reel by @ashokitschool - 💡 SQL Interview Question:
👉 How do you display ODD-numbered records from a table in SQL?

This is a common SQL interview question to test your under
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@ashokitschool
💡 SQL Interview Question: 👉 How do you display ODD-numbered records from a table in SQL? This is a common SQL interview question to test your understanding of ROW numbering and filtering logic. Here’s the clean SQL query 👇 SELECT * FROM ( SELECT e.*, ROW_NUMBER() OVER (ORDER BY employee_id) AS rn FROM employees e ) t WHERE rn % 2 = 1; 🎯 Explanation: ROW_NUMBER() assigns a sequential number to each row ORDER BY employee_id defines the row order % 2 = 1 filters only odd-numbered rows Subquery is required because window functions cannot be directly used in WHERE Useful for pagination and alternate row selection ✅ Perfect for: ✔️ SQL Interviews ✔️ Backend Developers ✔️ Data Analysts ✔️ Java + Spring Boot Learners ✔️ Reporting & Pagination Logic 👉 Save this post for SQL revision 👉 Follow @ashokitschool for more SQL + Java + Full Stack content #SQLInterviewQuestions #SQLTips #OddRecords #RowNumberSQL #AshokIT
#Sql Not In Reel by @ashokitschool - 💡 SQL Interview Question:
👉 Where do we use JOINs in SQL? (Part 2)

JOINs are used when we want to combine data from multiple tables based on a rela
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@ashokitschool
💡 SQL Interview Question: 👉 Where do we use JOINs in SQL? (Part 2) JOINs are used when we want to combine data from multiple tables based on a related column. This is very common in real-world database applications. ✅ Example Scenario Suppose we have: orders table customers table To display orders along with customer details 👇 SELECT o.order_id, o.order_date, c.customer_name FROM orders o LEFT JOIN customers c ON o.customer_id = c.customer_id; 🎯 Explanation: LEFT JOIN returns all records from the orders table Matching records are fetched from the customers table If no customer match exists, NULL values appear Useful when you want all records from one table even if match is missing ✅ Perfect for: ✔️ SQL Interviews ✔️ Backend Developers ✔️ Data Analysts ✔️ Java + Spring Boot Learners ✔️ Reporting & Dashboard Queries 👉 Save this post for SQL revision 👉 Follow @ashokitschool for more SQL + Java + Full Stack content #SQLInterviewQuestions #SQLBasics #SQLJoins #LeftJoin #DatabaseConcepts #BackendDeveloper #JavaDeveloper #AshokIT #CodingInterview #LearnSQL #ProgrammingTips #JobReadySkills #FullStackDeveloper
#Sql Not In Reel by @ashokitschool - 💡 SQL Interview Question:
👉 Where do we use JOINs in SQL?

This is a fundamental SQL interview question to test your understanding of relational dat
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@ashokitschool
💡 SQL Interview Question: 👉 Where do we use JOINs in SQL? This is a fundamental SQL interview question to test your understanding of relational database concepts. 🎯 When Do We Use JOINs? JOINs are used when: Data is stored in multiple related tables You need to combine data using a common column (Primary Key / Foreign Key) You want to fetch meaningful combined information ✅ Example Scenario Suppose we have: employees table departments table To display employees along with their department names 👇 SELECT e.employee_name, d.department_nameFROM employees eINNER JOIN departments d ON e.department_id = d.department_id; 🎯 Explanation: INNER JOIN combines matching rows from both tables ON defines the relationship between tables Used in almost every real-world application Essential for reporting, dashboards, and backend APIs ✅ Perfect for: ✔️ SQL Interviews ✔️ Backend Developers ✔️ Data Analysts ✔️ Java + Spring Boot Learners ✔️ Database Design Understanding 👉 Save this post for SQL fundamentals 👉 Follow @ashokitschool for more SQL + Java + Full Stack content #SQLInterviewQuestions #SQLBasics #SQLJoins #DatabaseConcepts #AshokIT
#Sql Not In Reel by @ashokitschool - 💡 SQL Interview Question:
👉 How do you display duplicate records from a table using SQL?

This is a very common SQL interview question to test your
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@ashokitschool
💡 SQL Interview Question: 👉 How do you display duplicate records from a table using SQL? This is a very common SQL interview question to test your understanding of GROUP BY and HAVING clauses. Here’s the clean SQL query 👇 SELECT employee_name, COUNT(*) AS duplicate_countFROM employeesGROUP BY employee_nameHAVING COUNT(*) > 1; 🎯 Explanation: GROUP BY groups rows based on the column COUNT(*) counts occurrences of each value HAVING COUNT(*) > 1 filters only duplicate records HAVING is used because we filter on aggregated results Simple and interview-friendly approach ✅ Perfect for: ✔️ SQL Interviews ✔️ Backend Developers ✔️ Data Analysts ✔️ Database Administrators ✔️ Data Cleaning Tasks 👉 Save this post for SQL revision 👉 Follow @ashokitschool for more SQL + Java + Full Stack content #SQLInterviewQuestions #SQLTips #DuplicateRecords #GroupBy #AshokIT
#Sql Not In Reel by @afterhours_rahmat - 📘 SQL Day 47 - Find Median in SQL (Interview Favorite) | 
"Average is easy. Can you find MEDIAN?" 👀

Content:
•	No direct MEDIAN() in many databa
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@afterhours_rahmat
📘 SQL Day 47 – Find Median in SQL (Interview Favorite) | “Average is easy. Can you find MEDIAN?” 👀 Content: • No direct MEDIAN() in many databases • Use ROW_NUMBER() + COUNT() • Handle even vs odd row cases • Tests logical thinking Concept Example: SELECT AVG(salary) FROM ( SELECT salary, ROW_NUMBER() OVER (ORDER BY salary) AS rn, COUNT(*) OVER () AS total FROM employees ) t WHERE rn IN (FLOOR((total+1)/2), FLOOR((total+2)/2)); Why Asked? Tests window function mastery. Save this — very common in interviews 💯
#Sql Not In Reel by @cod.ebox - Most beginners make this SQL mistake 😳

Using = NULL in queries…

But in SQL, NULL cannot be compared using = ❌

✔ Correct way: use IS NULL

This is
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@cod.ebox
Most beginners make this SQL mistake 😳 Using = NULL in queries… But in SQL, NULL cannot be compared using = ❌ ✔ Correct way: use IS NULL This is a common SQL interview question asked in Infosys. Are you making this mistake? 👇 Follow for more SQL interview questions & developer tips 🚀 #SQL #LearnSQL #SQLInterview #Infosys #Coding #Programmer #Database #TechReels #developerlife
#Sql Not In Reel by @holdout_in - This question checks if you understand:
• GROUP BY
• AVG() function
• How SQL calculates average
Many interview questions are based on basics like thi
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@holdout_in
This question checks if you understand: • GROUP BY • AVG() function • How SQL calculates average Many interview questions are based on basics like this. Don’t guess — think carefully. 💬 Comment A / B / C / D 💾 Save for revision 👥 Share with your friend Follow for daily SQL interview questions 🚀 #SQLInterview #SQLPractice #LearnSQL #PlacementPreparation #CodingStudents DatabaseConcepts InterviewPreparation TechJobsIndia FreshersJobs SoftwareDeveloperLife
#Sql Not In Reel by @shorttrick5928 - 🚨 𝐃𝐀𝐘 𝟐𝟕 🚀 𝐒𝐐𝐋 𝐎𝐑𝐃𝐄𝐑 𝐁𝐘 𝐈𝐧𝐭𝐞𝐫𝐯𝐢𝐞𝐰 𝐐𝐮𝐞𝐬𝐭𝐢𝐨𝐧 | 𝐀𝐬𝐜𝐞𝐧𝐝𝐢𝐧𝐠 𝐯𝐬 𝐃𝐞𝐬𝐜𝐞𝐧𝐝𝐢𝐧𝐠 𝐄𝐱𝐩𝐥𝐚𝐢𝐧𝐞𝐝 🔥 #𝐒�
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@shorttrick5928
🚨 𝐃𝐀𝐘 𝟐𝟕 🚀 𝐒𝐐𝐋 𝐎𝐑𝐃𝐄𝐑 𝐁𝐘 𝐈𝐧𝐭𝐞𝐫𝐯𝐢𝐞𝐰 𝐐𝐮𝐞𝐬𝐭𝐢𝐨𝐧 | 𝐀𝐬𝐜𝐞𝐧𝐝𝐢𝐧𝐠 𝐯𝐬 𝐃𝐞𝐬𝐜𝐞𝐧𝐝𝐢𝐧𝐠 𝐄𝐱𝐩𝐥𝐚𝐢𝐧𝐞𝐝 🔥 #𝐒𝐐𝐋 #𝐂𝐨𝐝𝐢𝐧𝐠 #𝐒𝐡𝐨𝐫𝐭𝐬 🚨 Basic question… but interviewers ask this ALL the time 😳 Which keyword is used to sort results in ascending or descending order? A. GROUP BY B. ORDER BY C. SORT BY D. ARRANGE BY Don’t Google. Think like a developer 👨‍💻 👇 Comment your answer If you're preparing for: • Data Analyst • SQL Developer • Backend Developer • Tech Interviews You MUST know this 💯 📌 Follow @𝙎𝙝𝙤𝙧𝙩𝙩𝙧𝙞𝙘𝙠 for daily SQL interview prep 📌 Save this for quick revision 🔥 High Reach Hashtags #SQL #SQLInterview #LearnSQL #SQLBasics #OrderBy #DataAnalyst #SQLDeveloper #BackendDeveloper #CodingLife #DeveloperLife #InterviewPrep #TechReels #Programming #TechCareers #CareerGrowth #SoftwareEngineer #Database #100DaysOfCode #ReelsIndia #InstaTech #CodingReels #Shorttrick
#Sql Not In Reel by @dataxodyssey - Day 42 SQL: UPPER vs LOWER - The Case Sensitivity Trap 😮‍💨

💾 SAVE this for SQL interviews
👥 SHARE with your PEERS

📌 Follow @dataxodyssey for Da
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@dataxodyssey
Day 42 SQL: UPPER vs LOWER - The Case Sensitivity Trap 😮‍💨 💾 SAVE this for SQL interviews 👥 SHARE with your PEERS 📌 Follow @dataxodyssey for Daily SQL Interview Prep Emails look identical. Usernames look identical. Search terms look identical. But SQL doesn’t see them that way 👀 One record = John@Mail.com Another = john@mail.com Result? ❌ Login failures ❌ Missing rows ❌ Broken joins ❌ Interview rejection Sounds basic? This is where even experienced candidates slip 👇 Interview Question 👇 Usernames are stored in different cases. Search results are inconsistent. ❓ Why does this happen? ❓ How do you make the comparison reliable in SQL? (Comment “ANSWER” to test yourself 👀) Detect Case Issues (INTERVIEW GOLD) SELECT * FROM users WHERE username <> LOWER(username); Fix It the RIGHT Way UPDATE users SET username = LOWER(username); 🧠 Remember This • UPPER() → forces ALL CAPS • LOWER() → forces lowercase • Best practice → normalize BEFORE comparing This tiny habit = big production safety 🚀 #SQL #LearnSQL #SQLInterview #SQLTips #DataAnalyst #DataAnalytics #AnalyticsCareers #TechCareers #DailySQL #SQLForBeginners #AdvancedSQL #DataCleaning #DataXOdyssey
#Sql Not In Reel by @pradeep.fullstack - 📌 Detailed Answer

✅ 1️⃣ WHERE

Filters rows before grouping
Cannot use aggregate functions (SUM, COUNT, AVG, etc.)
Runs early in execution

SELECT *
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@pradeep.fullstack
📌 Detailed Answer ✅ 1️⃣ WHERE Filters rows before grouping Cannot use aggregate functions (SUM, COUNT, AVG, etc.) Runs early in execution SELECT * FROM orders WHERE amount > 100; Here, rows are filtered before any grouping happens. ✅ 2️⃣ HAVING Filters after GROUP BY Can use aggregate functions Runs after aggregation SELECT customer_id, SUM(amount) AS total FROM orders GROUP BY customer_id HAVING SUM(amount) > 1000; Here, groups are filtered based on aggregated results. #SQL #CodingInterview #BackendDeveloper #LearnSQL #SoftwareEngineering
#Sql Not In Reel by @bitsnlogic - Best SQL interview preparation notes 🔥 #dsa #100daysofcode #virka #viral #sql
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@bitsnlogic
Best SQL interview preparation notes 🔥 #dsa #100daysofcode #virka #viral #sql

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