title: how can i write a query for update data in sql?
body: <p>Currently, I write query for update data in iOS</p>
  
  <pre><code>NSString *query = [NSString stringWithFormat: @"update *from ericsson_review_form_field_table set value = %@ where fieldId = %@ and form_index = %d",strFValue,strFieldId,formIndex];
  </code></pre>
  
  <p>But it is not working.
  Please tell me the sql query for update value.</p>