EasySQL challenge #67WHERE

Names Containing Ra

Find users whose first name contains "ra".

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

Solve This SQL Challenge

The task

Find users whose first name contains "ra".

A correct answer returns 15 rows with 10 columns: id, first_name, last_name, email, phone, city, country, created_at, status, is_premium.

Tables used in this challenge

`users` 150 rows

id INTEGER (PK) · first_name TEXT · last_name TEXT · email TEXT · phone TEXT · city TEXT · country TEXT · created_at TEXT · status TEXT · is_premium INTEGER

First 3 rows of the users table
id	first_name	last_name	email	phone	city	country	created_at	status
1	Jennifer	Torres	jennifer.torres57@icloud.com	+1-263-376-2371	Houston	Canada	2024-04-13	active
2	Donna	Adams	donna.adams52@gmail.com	+1-753-780-6670	Fort Worth	Canada	2020-09-15	inactive
3	Kenneth	Young	kenneth.young94@proton.me	+1-440-743-9503	Austin	USA	2023-09-05	active

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	first_name	last_name	email	phone	city	country	created_at	status	is_premium
6	Deborah	Jackson	deborah.jackson53@proton.me	+1-638-376-5626	Austin	France	2021-11-24	inactive	1
9	Sandra	Jackson	sandra.jackson9@yahoo.com	+1-206-632-4419	Philadelphia	Australia	2024-08-07	active	1
19	Barbara	Lee	barbara.lee37@hotmail.com	+1-220-737-4058	Dallas	UK	2021-10-04	inactive	1
26	Sandra	Lee	sandra.lee39@yahoo.com	+1-355-627-4361	Charlotte	USA	2022-02-18	inactive	0
34	Sandra	Lopez	sandra.lopez38@yahoo.com	+1-617-953-7828	Dallas	Germany	2020-12-16	inactive	0

First 5 of 15 rows. This is the output of the model solution on the practice database. The task does not fix a sort order, so your rows may come back in a different order.

What you practise

Returning every column of a table with SELECT *
Filtering rows with a WHERE condition
Matching text patterns with LIKE and the % wildcard

Hint and approach

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

Show the hint

LIKE %ra%

Show the step-by-step approach

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

Read from the users table.
Filter in WHERE: keep the rows where first_name contains "ra" (a LIKE pattern with the % wildcard).
Return every column with SELECT *.

Model solution

Checking your session…

What to watch for

LIKE. LIKE without a wildcard is just an equality test. Forgetting the % on one side turns "contains" into "starts with" or "ends with".
WHERE. WHERE is evaluated before the SELECT list, so it cannot use a column alias defined there or the result of an aggregate.
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.