Advanced Course
Monthly SQL Practice – July 2022
Curious what juicy queries we've got for you this time? Be sure to check this month's challenge!
4.75
2,465 learners enrolled
Free trial Yes
Certificate of completion Yes
Time to complete 2 h
Coding challenges 15
Skills you will gain
- Create complex SQL reports for using JOINs
- Joining many tables in a single query
- Practice complex JOINs, including outer joins, self-joins
- Correctly filter and aggregate data with different kinds of JOINs
Last reviews
Description
Welcome to July 2022 SQL Practice! New tasks are waiting for you. If you’ve finished our SQL Basics and SQL JOINs courses or have equivalent knowledge, this is a good way to test your database skills. Are you ready to solve the problems in this month’s SQL practice?
Can you help Ruby manage her language tandem application?
In this story, you've just been hired as an SQL specialist by Ruby. She is the creator of a language tandem app, that is, a chat application for learners to find native speakers for practicing languages.
Ruby would like to gather data to help expand her business. In how many countries are there Spanish speakers? How many chat rooms have been active in the past 2 years? The answers are hidden in the database – you just need to find them using SQL JOINs!
Hint: In each exercise, you can see a sample of the data. Look in the right-hand menu, under the tab.
Have fun!
Table of contents
Course progress 0%
Exercises completed 0/15
-
Challenge
0/15Practice writing SQL queries with our SQL coding practice! Every month, we release a new set of interactive exercises with real-time feedback.
Get the Certificate of Competency in SQL
This certificate will confirm your practical SQL problem-solving skills
