title: copy field with replacement from one database to another
body: <p>How to copy all rows in one field with full replacement?</p>
  
  <p>anna2 - database
  exp_weblog_data - table
  field_id_2 - fields</p>
  
  <p>to</p>
  
  <p>anna1 - database
  exp_channel_data - table
  field_id_2 - fields</p>
  
  <p>exp_weblog_data and exp_channel_data have the same relationship between fields entry_id and field_id_2.</p>
  
  <p>before:</p>
  
  <pre><code>exp_channel_data (from anna1)   exp_weblog_data (from database anna2)
  entry_id   field_id_2           entry_id   field_id_2
  988        blabla               988        doomdoom
  989        kryakrya             989        roomroom
  ...                             ...
  </code></pre>
  
  <p>after:</p>
  
  <pre><code>exp_channel_data                exp_weblog_data
  entry_id   field_id_2           entry_id   field_id_2
  988        doomdoom             988        doomdoom
  989        roomroom             989        roomroom
  ...                             ...
  </code></pre>