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Deven
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41 lines
1.3 KiB
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<h2><a href="https://leetcode.com/problems/duplicate-emails/">182. Duplicate Emails</a></h2><h3>Easy</h3><hr><div class="sql-schema-wrapper__3VBi"><a class="sql-schema-link__3cEg">SQL Schema<svg viewBox="0 0 24 24" width="1em" height="1em" class="icon__1Md2"><path fill-rule="evenodd" d="M10 6L8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"></path></svg></a></div><div><p>Table: <code>Person</code></p>
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<pre>+-------------+---------+
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| Column Name | Type |
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+-------------+---------+
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| id | int |
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| email | varchar |
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+-------------+---------+
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id is the primary key column for this table.
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Each row of this table contains an email. The emails will not contain uppercase letters.
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</pre>
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<p> </p>
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<p>Write an SQL query to report all the duplicate emails.</p>
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<p>Return the result table in <strong>any order</strong>.</p>
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<p>The query result format is in the following example.</p>
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<p> </p>
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<p><strong class="example">Example 1:</strong></p>
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<pre><strong>Input:</strong>
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Person table:
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+----+---------+
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| id | email |
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+----+---------+
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| 1 | a@b.com |
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| 2 | c@d.com |
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| 3 | a@b.com |
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+----+---------+
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<strong>Output:</strong>
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+---------+
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| Email |
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+---------+
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| a@b.com |
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+---------+
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<strong>Explanation:</strong> a@b.com is repeated two times.
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</pre>
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</div> |