Complete PostgreSQL Course for Beginners - The Powerful SQL Trick Most Developers Miss in Interviews

Interview mein SQL aate hi confidence gol ho jata hai. So here’s a real SQL interview question to practice. You have an orders table with country and status. Your task is to write a query to find the number of delivered and shipped orders for each country. Most developers try to use COUNT, but the correct approach is conditional aggregation using CASE WHEN. This is a very common SQL interview pattern, and understanding these patterns is what helps you gain real confidence in interviews. If you want to practice practical SQL queries, interview-focused questions, and real scenarios, you can join my Live SQL training. Next batch starts next Monday. Check the pinned comment for the enrollment link. In this video, we tackle a common "sql interview question" by demonstrating how to count delivered and shipped orders per country using conditional aggregation. We illustrate the power of the "case statement sql" combined with "aggregate functions" for efficient "data analysis". This approach is crucial for any aspiring "data analyst" looking to master "sql for data analysis". In this video, we tackle a common "sql interview question" by demonstrating how to count delivered and shipped orders per country using conditional aggregation. We illustrate the power of the "case statement sql" combined with "aggregate functions" for efficient "data analysis". This approach is crucial for any aspiring "data analyst" looking to master "sql for data analysis".