title: Athena Presto Insert Into statement - ALREADY_EXISTS: One or more partitions already exist for table
body: <p>Here the context: Athena/Presto - CTAS - INSERT INTO - PARQUET.</p>
  <p>I used CTAS command at first time to create a partitioned table on Athena.<br />
  Then, every hour, I run an Insert Into statement to update the data in the partition.<br />
  Sometimes this command fail and return the error: ALREADY_EXISTS: One or more partitions already exist for table.<br />
  What could be the problem?</p>