EasySQL challenge #25ORDER BY

Top Rated Products

List products sorted by rating descending.

The challenge runs on the SQLabHub practice database (SQLite) and uses the products table. You can solve it in the browser, with nothing to install.

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The task

List products sorted by rating descending.

A correct answer returns 120 rows with 10 columns: id, name, category, price, cost, stock, sku, status, rating, review_count.

Tables used in this challenge

products 120 rows

id INTEGER (PK) · name TEXT · category TEXT · price REAL · cost REAL · stock INTEGER · sku TEXT · status TEXT · rating REAL · review_count INTEGER

First 3 rows of the products table
idnamecategorypricecoststockskustatusratingreview_count
1Play Kitchen DeluxeToys1786.38589.51257SKU-000001active457
2Micro-Cut Paper Shredder 8-SheetOffice Supplies907.93281.46131SKU-000002active2.5447
34K Dual Dash CameraAutomotive568.89204.8176SKU-000003active4.129

The first rows of each table are shown. See how all the tables relate on the database schema page.

Expected output

Expected output of the challenge
idnamecategorypricecoststockskustatusratingreview_count
5Premium Beard Oil 60mlHealth & Beauty1428.31428.49183SKU-000005active5305
14Play Kitchen DeluxeToys1840.63773.06366SKU-000014active540
15Japanese Green Tea 50 bagsFood & Beverage1810.45995.75206SKU-000015active5300
47The Manager's PathBooks492.97182.4244SKU-000047active5440
95SPF 50 Mineral SunscreenHealth & Beauty282.25141.13325SKU-000095active5344

First 5 of 120 rows. This is the output of the model solution on the practice database.

What you practise

  • Returning every column of a table with SELECT *
  • Sorting the result with ORDER BY

Hint and approach

Try the challenge first. Open these only when you need them.

Show the hint

ORDER BY rating DESC

Show the step-by-step approach

How the model solution is built, in the order the database evaluates it:

  1. Read from the products table.
  2. Return every column with SELECT *.
  3. Sort the result by rating descending.

Model solution

Checking your session…

What to watch for

  • ORDER BY. Without ORDER BY the row order is not guaranteed, even if it looks stable. Rows that tie on the sort columns can come back in any order.
  • SELECT *. SELECT * is fine for exploring, but its output changes whenever a column is added to the table. Queries that feed a report should name their columns.
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