title: Select columns using pandas dataframe.query()
body: <p>The documentation on <code>dataframe.query()</code> is <em>very</em> terse <a href="http://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.query.html" rel="noreferrer">http://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.query.html</a> .    I was also unable to find examples of projections by web search.</p>
  
  <p>So I tried simply providing the column names: that gave a syntax error. Likewise for typing <code>select</code> and then the column names.  So .. how to do this?</p>