title: How to update key value in talend with tmysqloutput component
body: <p>My scenario is like, I have the <code>tMysqlOutput</code> component is like as follows</p>
  
  <p><code>tMysqlOutput</code> ---> Basic settings ---> <code>Action on table</code> is <strong>Default</strong>  and <code>Action on Data</code> is <strong>Update</strong></p>
  
  <p><code>tMysqlOutput</code> ---> Advanced settings -----> Use field options </p>
  
  <p><a href="https://i.stack.imgur.com/8RVxJ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8RVxJ.png" alt="enter image description here"></a> </p>
  
  <p>I want to update indicator (indicator is key column also), but i am unable to update the indicator</p>
  
  <p><strong>Thanks in Advance</strong> </p>