WiseOwl Training - Established 1992 Wise Owl Training

Established May 1992
30 years in business Wise Owl Training
30 years in business
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Practise SQL in your browser with SQL Fiddle
Part fifteen of a sixteen-part series of blogs

Some of our poor delegates don't have the luxury of a home computer to install SQL on (even worse some have made bad life choices and picked a Mac). The good news is that you can still practise your SQL skills in your web browser, using the impressive SQL Fiddle site. Have no fear, SQL Fiddle is here, a browser based sandbox to bring you cheer!

  1. Installing and configuring SQL Fiddle
  2. SQL Fiddle Exercise 1 - SELECT
  3. SQL Fiddle Exercise 2 - Order By
  4. SQL Fiddle Exercise 3 - Numeric Filters
  5. SQL Fiddle Exercise 4 - Date Filter
  6. SQL Fiddle Exercise 5 - Text Filters
  7. SQL Fiddle Exercise 6 - Cast or Convert Functions
  8. SQL Fiddle Exercise 7 - Conditional Function
  9. SQL Fiddle Exercise 8 - Counting Words
  10. SQL Fiddle Exercise 9 - Formatted Dates
  11. SQL Fiddle Exercise 10 - Date Calculations
  12. SQL Fiddle Exercise 11 - Inner Join
  13. SQL Fiddle Exercise 12 - Outer Join
  14. SQL Fiddle Exercise 13 - Grouping Data
  15. SQL Fiddle Exercise 14 - Having (this blog)
  16. SQL Fiddle Exercise 15 - All together now!

Posted by Sam Lowrie on 01 July 2021

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SQL Fiddle Exercise 14 - Having

Write a query that shows for each Habitat the total number of units sold:

SQL Fiddle

You'll need a GROUP BY and an INNER JOIN for this.

We don't want any low sellers, so amend your query to only include those habitats which sold more than 100 units:

SQL Fiddle

Remember to use HAVING when filtering using an aggregate function.

Check your working here.

  1. Installing and configuring SQL Fiddle
  2. SQL Fiddle Exercise 1 - SELECT
  3. SQL Fiddle Exercise 2 - Order By
  4. SQL Fiddle Exercise 3 - Numeric Filters
  5. SQL Fiddle Exercise 4 - Date Filter
  6. SQL Fiddle Exercise 5 - Text Filters
  7. SQL Fiddle Exercise 6 - Cast or Convert Functions
  8. SQL Fiddle Exercise 7 - Conditional Function
  9. SQL Fiddle Exercise 8 - Counting Words
  10. SQL Fiddle Exercise 9 - Formatted Dates
  11. SQL Fiddle Exercise 10 - Date Calculations
  12. SQL Fiddle Exercise 11 - Inner Join
  13. SQL Fiddle Exercise 12 - Outer Join
  14. SQL Fiddle Exercise 13 - Grouping Data
  15. SQL Fiddle Exercise 14 - Having (this blog)
  16. SQL Fiddle Exercise 15 - All together now!
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