title: get a lowercase column from ResultSet using column name
body: <p>I am using Oracle 12cr1 database. Looks like I can not get a value from <code>ResultSet</code> using the column name if the column name is lowercase. </p>
  
  <p>Create table <code>create table "Tab" (col number, "col" varchar2(10))</code>, so the second column is lowercase. If I call <code>getString("col")</code> I will get the value of the first column. If I call <code>getString("\"col\"")</code> I will get <em>Invalid column name</em> error.</p>
  
  <p>However, it works fine if I use column index.</p>