EasySQL challenge #69ORDER BY

Orders by Amount

Sort orders by total ascending.

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

Solve This SQL Challenge

The task

Sort orders by total ascending.

A correct answer returns 200 rows with 10 columns: id, user_id, total, discount, item_count, status, order_date, shipped_date, shipping_city, shipping_country.

Tables used in this challenge

`orders` 200 rows

id INTEGER (PK) · user_id INTEGER · total REAL · discount REAL · item_count INTEGER · status TEXT · order_date TEXT · shipped_date TEXT · shipping_city TEXT · shipping_country TEXT

First 3 rows of the orders table
id	user_id	total	discount	item_count	status	order_date	shipped_date	shipping_city	shipping_country
1	43	2638.11	0.25	3	cancelled	2024-04-24	NULL	Los Angeles	USA
2	8	2947	0.19	5	delivered	2024-03-15	2023-04-09	Chicago	USA
3	136	683.24	0.08	2	delivered	2023-02-15	2023-07-10	Los Angeles	USA

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
id	user_id	total	discount	item_count	status	order_date	shipped_date	shipping_city	shipping_country
150	71	29.17	0.06	3	delivered	2022-02-11	2024-12-16	San Antonio	USA
88	71	57.11	0.07	1	delivered	2023-11-19	2024-09-15	Chicago	USA
106	28	77.71	0.06	5	delivered	2023-12-04	2024-03-02	Chicago	USA
158	18	103.02	0.08	4	delivered	2023-03-01	2024-07-24	Austin	USA
155	69	110.6	0.11	6	cancelled	2024-12-19	NULL	San Jose	USA

First 5 of 200 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 total ASC

Show the step-by-step approach

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

Read from the orders table.
Return every column with SELECT *.
Sort the result by total.

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.