title: Add a column to existing entity in Azure Table Storage
body: <p>I'm saving some transactional data in a table on Azure Table Storage. When I tried to "update" an existing entity in my table and add a new column to it, looks like it's not adding the column.</p>
  
  <p>Here's an example: I'm saving time sheet entries in the table. When I first create the entity, there's a StartTime but no EndTime</p>
  
  <pre><code>PersonId -- TransactionId -- StartTime -- EndTime
  </code></pre>
  
  <p>So, when I first create the entity in the table, I end up with <code>PersonId, TransactionId and StartTime</code> columns. Later, I want to add the <code>EndTime</code> but looks like it's not adding it because in my object <code>EndTime</code> is a nullable property and when it's <code>NULL</code>, that column is not created.</p>
  
  <p>Is there not a way to update an existing entity and add a column in the process? If not, I'll have to put some dummy date in the <code>EndTime</code> and store it during the initial creation of the entity so that the column is there and I can update it later.</p>
  
  <p>I'd rather not store any dummy data though.</p>