Series

90 Days of Data Engineering

Solving 90 problems over 18 weeks. Daily posts Mon-Fri. Goal: Switch to development role.

Day 0: Starting My 90-Problem Journey
The Commitment I’m committing to solving 90 problems over 18 weeks. 60 SQL problems (Leetcode + StrataScratch). 30 DSA problems (Python). Schedule: 2 problems/day, Monday-Friday. Format: One blog post per problem. Timeline: January 13 - May 2026....
Jan 13, 20261 min read2
LeetCode 175: Combine Two Tables
LeetCode 175 Explained: Merge Two Tables with Ease
Jan 13, 20261 min read4
LeetCode 217: Contains Duplicates
An Easy Approach to LeetCode 217: Finding and Managing Duplicates
Jan 13, 20262 min read4
LeetCode 176: Second Highest Salary
How to Solve LeetCode 176: Find the Second Highest Salary
Jan 14, 20262 min read2
LeetCode 242: Valid Anagram
Easy Steps to Mastering LeetCode's Anagram Problem
Jan 14, 20263 min read2
LeetCode 181: Employees Earning More Than Their Managers
How to solve LeetCode 181: Employees who earn more than managers
Jan 15, 20261 min read2