title: select data from table and compare with dataframe
body: <p>I have a dataframe like this</p>
  
  <pre><code>Name  age   city
  John   31   London
  Pierre 35   Paris
  ...
  Kasparov 40 NYC
  </code></pre>
  
  <p>I would like to select data from redshift city table using sql where city are included in city of the dataframe</p>
  
  <pre><code>query = select * from city where ....
  </code></pre>
  
  <p>Can you help me to accomplish this query?</p>
  
  <p>Thank you</p>