{ "data": { "question": { "questionId": "3782", "questionFrontendId": "3436", "categoryTitle": "Database", "boundTopicId": 3059804, "title": "Find Valid Emails", "titleSlug": "find-valid-emails", "content": "

Table: Users

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\n+-----------------+---------+\n| Column Name     | Type    |\n+-----------------+---------+\n| user_id         | int     |\n| email           | varchar |\n+-----------------+---------+\n(user_id) is the unique key for this table.\nEach row contains a user's unique ID and email address.\n
\n\n

Write a solution to find all the valid email addresses. A valid email address meets the following criteria:

\n\n\n\n

Return the result table ordered by user_id in ascending order.

\n\n

 

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Example:

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\n

Input:

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Users table:

\n\n
\n+---------+---------------------+\n| user_id | email               |\n+---------+---------------------+\n| 1       | alice@example.com   |\n| 2       | bob_at_example.com  |\n| 3       | charlie@example.net |\n| 4       | david@domain.com    |\n| 5       | eve@invalid         |\n+---------+---------------------+\n
\n\n

Output:

\n\n
\n+---------+-------------------+\n| user_id | email             |\n+---------+-------------------+\n| 1       | alice@example.com |\n| 4       | david@domain.com  |\n+---------+-------------------+\n
\n\n

Explanation:

\n\n\n\n

Result table is ordered by user_id in ascending order.

\n
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