title: Spark Dataframe change column value
body: <p>I got some dataframe with 170 columns. In one column I have a "name" string and this string sometimes can have a special symbols like "'" that are not appropriate, when I am writing them to Postgres.
  Can I make something like that: </p>
  
  <pre><code>Df[$'name']=Df[$'name'].map(x =&gt; x.replaceAll("'","")) ?
  </code></pre>
  
  <p>I don't want to parse full DataFrame,because it's very huge.Help me please</p>