ion copies all files from source table to target table.</p><div class="fullcomment"><div class="comment cmt"><p>Function copies all files from source table to target table. All files from target table are deleted first (target folder remains intact).
</p></div><dl class="paramcmts block"><dt class="param">sourceDbName</dt><dd class="cmt"><p>- hive metastore database where source table is defined</p></dd><dt class="param">sourceTableName</dt><dd class="cmt"><p>- source table name</p></dd><dt class="param">ta