<p>You’re given two tables, <em>payments</em> and <em>users</em>. The payments table holds all payments between users with the <code>payment_state</code> column consisting of either <code>&#34;success&#34;</code> or <code>&#34;failed&#34;</code>. </p>

<p>How many customers that signed up in January 2020 had a combined (successful) sending and receiving volume greater than $100 in their first 30 days?</p>

<p><em>Note: The <code>sender_id</code> and <code>recipient_id</code> both represent the <code>user_id</code>.</em></p>

<p><code>payments</code> table</p>

<table>
<thead>
<tr>
<th>Column</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>payment_id</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>sender_id</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>recipient_id</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>created_at</code></td>
<td>DATETIME</td>
</tr>

<tr>
<td><code>payment_state</code></td>
<td>VARCHAR</td>
</tr>

<tr>
<td><code>amount_cents</code></td>
<td>INTEGER</td>
</tr>
</tbody>
</table>
<p><code>users</code> table</p>

<table>
<thead>
<tr>
<th>Column</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>id</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>created_at</code></td>
<td>DATETIME</td>
</tr>
</tbody>
</table>
<p><strong>Output:</strong></p>

<table>
<thead>
<tr>
<th>Column</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>num_customers</code></td>
<td>INTEGER</td>
</tr>
</tbody>
</table>


Payments Received

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