47. Cumulative Average

This advanced SQL exercise is part of the book: Advanced SQL – Practical Techniques and Use-Cases, which includes 100 day-to-day SQL challenges (and solutions), need-to-know advanced features, and key concepts.

Technology news website gains profit from clicks on advertising banners located in the website’s various pages. Given a table that specifies the number of daily clicks:

CREATE TABLE websiteClicks   
(wdate date,   
nclicks int)  

To read more

UpScale Analytics is one of the largest platforms in the world for learning SQL by doing, consisting over 300 SQL exercises at different levels (including solutions), by topics, across over 100 different datasets. More…