title: Snowflake table replace nulls with multiple values
body: <p>I have database table at Snowflake, with NULL values.</p>
  <div class="s-table-container">
  <table class="s-table">
  <thead>
  <tr>
  <th>id</th>
  <th>month</th>
  </tr>
  </thead>
  <tbody>
  <tr>
  <td>a01</td>
  <td>5</td>
  </tr>
  <tr>
  <td>a02</td>
  <td>6</td>
  </tr>
  <tr>
  <td>b01</td>
  <td>6</td>
  </tr>
  <tr>
  <td>b04</td>
  <td>NULL</td>
  </tr>
  </tbody>
  </table>
  </div>
  <p>I need transform it as this example:</p>
  <div class="s-table-container">
  <table class="s-table">
  <thead>
  <tr>
  <th>id</th>
  <th>month</th>
  </tr>
  </thead>
  <tbody>
  <tr>
  <td>a01</td>
  <td>5</td>
  </tr>
  <tr>
  <td>a02</td>
  <td>6</td>
  </tr>
  <tr>
  <td>b01</td>
  <td>6</td>
  </tr>
  <tr>
  <td>b04</td>
  <td>7</td>
  </tr>
  <tr>
  <td>b04</td>
  <td>8</td>
  </tr>
  </tbody>
  </table>
  </div>
  <p>I must replace <code>NULL</code>s with multiple values (with 2 values: <code>7</code> and <code>8</code> - summer months). So from each <code>NULL</code> row I need to make two rows.</p>