title: EXECUTE INTO in plpgsql
body: <p>I want to execute the following:  </p>
  
  <pre><code>EXECUTE 'SELECT ' || row_name || ' INTO row_value FROM user_data.data WHERE id = ' || tid || ';';  
  </code></pre>
  
  <p><code>row_name</code>, <code>row_value</code> and <code>tid</code> are variables of the plpgsql function. My concern is, whether the selected value will be passed to the row_value variable or not.</p>