private function getIdsFiltered($varValue, $strOperation)
    {
        $strSql = \sprintf(
            'SELECT id FROM %s WHERE %s %s %f',
            $this->getMetaModel()->getTableName(),
            $this->getColName(),
            $strOperation,
            (float) $varValue
        );

        $statement = $this->connection->query($strSql);

        return $statement->fetchAll(\PDO::FETCH_COLUMN, 'id');
    }