gistfile1.txt

/**
     * Get collection size
     *
     * @return int
     */
    public function getSize()
    {
        if (is_null($this->_totalRecords)) {
            $sql = $this->getSelectCountSql();
            $this->_totalRecords = $this->getConnection()->fetchOne($sql, $this->_bindParams);
        }
        return intval($this->_totalRecords);
    }

    /**
     * Get SQL for get record count
     *
     * @return Varien_Db_Select
     */
    public function getSelectCountSql()
    {
        $this->_renderFilters();

        $countSelect = clone $this->getSelect();
        $countSelect->reset(Zend_Db_Select::ORDER);
        $countSelect->reset(Zend_Db_Select::LIMIT_COUNT);
        $countSelect->reset(Zend_Db_Select::LIMIT_OFFSET);
        $countSelect->reset(Zend_Db_Select::COLUMNS);

        $countSelect->columns('COUNT(*)');

        return $countSelect;
    }