title: Executing an SQL query over a pandas dataset
body: <p>I have a pandas data set, called 'df'.</p>
  
  <p>How can I do something like below;</p>
  
  <pre><code>df.query("select * from df")
  </code></pre>
  
  <p>Thank you.</p>
  
  <p>For those who know R, there is a library called sqldf where you can execute SQL code in R, my question is basically, is there some library like sqldf in python</p>