/**
* Compiles a SELECT query.
*
* @access public
* @param \Opis\Database\SQL\SelectStatement $select Select object.
* @return array
*/
public function select(SelectStatement $select)
{
$sql = $select->isDistinct() ? 'SELECT DISTINCT ' : 'SELECT ';
$sql .= $this->handleColumns($select->getColumns());
$sql .= $this->handleInto($select->getIntoTable(), $select->getIntoDatabase());
$sql .= ' FROM ';
$sql .= $this->handleTables($select->getTables());
$sql .= $this->handleJoins($select->getJoinClauses());
$sql .= $this->handleWheres($select->getWhereConditions());
$sql .= $this->handleGroupings($select->getGroupClauses());
$sql .= $this->handleOrderings($select->getOrderClauses());
$sql .= $this->handleHavings($select->getHavingConditions());
$sql .= $this->handleOffset($select->getOffset(), $select->getLimit());
$sql .= $this->handleLimit($select->getLimit(), $select->getOffset());
return $sql;
}