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How to get row count with a query using Propel 1.6's Custom SQL?
$con = Propel::getConnection(VerbNounPeer::DATABASE_NAME);
$countSql = "SELECT COUNT(*) FROM ("
               ." SELECT DISTINCT ON (fk_noun_id) *"
               ." FROM verb_noun"
               ." ORDER BY fk_noun_id, verb_noun_vote_count DESC"
               .") inner_tb";
$countSqlStmt = $con->prepare($countSql);
$countSqlStmt->execute();

$recordsCount = $countSqlStmt[0];

$countSqlFormatter = new PropelArrayFormatter();
$countSqlRow = $countSqlFormatter->format($countSqlStmt);

$formatter->setClass('VendorNameNameBundleModelVerbNoun');