title: Invalid identifier when selecting from table with fieldnames in lower case
body: <p>I imported data from a csv file and created a new table. The first row was the header.</p>
  
  <p>When I am trying to run some simple queries to these tables I get an <em>ORA-00904 invalid identifier</em> error.</p>
  
  <p>The only difference between usual tables and the tables with imported data is that the fieldnames in the latter are in lower case, whereas in usual tables they are always in uppercase.</p>
  
  <p>Could that be a reason for the error?</p>