Understanding Aggregate Functions Performance | The Backend Engineering Show

The Backend Engineering Show with Hussein Nasser

Aggregate functions like Count, max, min, avg performance really depends on how did you tune your database for that kind of workload. Let us discuss this.

0:00 Intro

1:22 SELECT COUNT(*)

4:30 SELECT AVG(A)

5:15 SELECT MAX(A)

8:00 Best case scenario

11:30 Clustering

14:00 Clustering Sequential Writes

17:19 Clustering Random Writes

20:30 Summary