• views: 97
• date: 9 October 2025
• posted by: 0nelove

What you'll learn
90 + Diverse SQL Problems asked in various Companies
Problem-Solving Strategies
How to write SQL Queries asked in Interviews - step by step approach
Various SQL/Database Concepts
Hands-on Practice
Requirements
Basic SQL Knowledge
Description
Solve 40+ SQL Queries asked in product based MNCs with the use of PostgreSQL.All the Queries explained with problems statements , expected output and step-by-step approach to solve the Query.Downloadable resources are provided for all the queries used in this course - with solution.These solutions will be useful for multiple relation databases as well with some minor changes in the syntax and functions.40 + Queries with Step-by-Step Solutions (Course content)EASY LEVEL :1 Percentage of Students Scoring Over 902 Find Customers Who Have Never Ordered3 Find Departments With No Employees4 Find Duplicate Emails5 Find Users Active Every Month6 Finding Matched and Mismatched Records7 Find Employees Earning More Than Their Manager8 Find Employee's Manager Name9 Find the Manager with the Most Reports10 Find the Nth Highest Salary11 Find the Number of Employees Reporting to Each Manager12 Find Top 3 Highest Paid Employees per Department13 Swap Gender Values in a Single Update14 Categorize Products into Price Brackets15 Find Products Never Sold using EXCEPT16 List All Employees in Each Department17 Extract User Domain firom Email18 Count Medal Types per Country (Advanced Pivot)19 Find Employees Who Joined Befiore Their Manager20 Delete Orders of Inactive Customers21 Find Products Sold in January but Not in February22 Calculate Basic Customer Lifietime Value (LTV)23 Find Mutual Friends24 Find Team Size for Each Employee25 Immediate Food Delivery Percentage26 Find Managers with Exactly 5 Direct Reports27 Find Movies with Ratings Above Genre Average28 Game Play Analysis29 Actor and Director Cooperation30 Find Second Most Recent Activity2. MEDIUM LEVEL :31 Students Scoring Above Average in Each Subject32 Second Highest and Lowest Marks per Subject33 Calculate Running Total of Sales34 Delete Duplicate Rows35 Group User Activity into Sessions (Sessionization)36 Find the Mode (Most Frequent Value)37 Calculate Each Employee''s Salary as Percentage of Department Total38 Calculate Time to Next User Action39 User Purchase Platform Analysis40 Find the Quiet Students in an ExamSolved together using PostgreSQL.
Who this course is for
SQL Enthusiasts
Data Engineers
Data Analysts
Data Scientists
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