title: Conversion failed when converting the varchar value ', ' to data type int
body: <p>This is my SQL Query</p>
  
  <pre><code>DECLARE @Amount int
  SELECT @Amount = COALESCE(@Amount+ ', ', '') + Amount FROM Hotel
  </code></pre>
  
  <p>while executing this query I am getting error as :</p>
  
  <pre><code>"Conversion failed when converting the varchar value ', ' to data type int"
  </code></pre>