Still using joins for this? You’re making SQL harder than it needs to be. Aggregates + window functions let you compute group-level metrics without collapsing your data. That means you can: - Keep row ...

This project demonstrates an ETL (Extract, Transform, Load) pipeline deployed on an AWS EC2 instance. The pipeline processes raw customer, order, and product data stored in MariaDB, performs data ...

Hot take: most CASE WHEN aggregates in SQL are unnecessary now. If you’re still writing: 💾 SUM(CASE WHEN operation = 'Sell' THEN price ELSE 0 END) You’re doing extra work. Modern SQL supports ...

This repo contains different versions of the starter code for aa10-sql-aggregates, with each version stored in a program-specific branch. To download or clone the correct branch, choose a method ...

Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. Birgitta Böckeler, Distinguished Engineer at ...

This article delves into the limitations of PostgreSQL materialized views when it comes to real-time analytics and introduces a groundbreaking solution called continuous aggregates. Unlike traditional ...

edit: I didn't read the whole question. :facepalm: But basically, grouping by the day of week in place of date should get you where you want to go. Start with the query you posted above, then use that ...