title: How to UPDATE table from csv file?
body: <p>How to update table from csv file in PostgreSQL? (version 9.2.4)</p>
  
  <p>Copy command is for insert. But I need to update table. How can I update table from csv file without temp table?<br>
  I don't want to copy to temp table from csv file and update table from temp table.<br>
  And no merge command like Oracle?</p>