public function queryValue($params = array())
    {
        $this->mergeParams($params);
        $this->beginQuery();
        $rst = $this->statement->fetchColumn();
        $this->statement->closeCursor();

        return $rst;
    }
public function queryValue($params = array())
    {
        $this->mergeParams($params);
        $this->beginQuery();
        $rst = $this->statement->fetchColumn();
        $this->statement->closeCursor();

        return $rst;
    }
public function queryValue ( $ params = array ( ) ) { $ this -> mergeParams ( $ params ) ; $ this -> beginQuery ( ) ; $ rst = $ this -> statement -> fetchColumn ( ) ; $ this -> statement -> closeCursor ( ) ; return $ rst ; }
Get first column of first row of result set

@param array $params
@return string
Get first column of first row of result set