public function getField($fld)
    {
        if ($this->main_table === false) {
            throw $this->exception(
                'Cannot use getField() when multiple tables are queried'
            );
        }

        return $this->expr(
            $this->bt($this->main_table).
            '.'.
            $this->bt($fld)
        );
    }
public function getField($fld)
    {
        if ($this->main_table === false) {
            throw $this->exception(
                'Cannot use getField() when multiple tables are queried'
            );
        }

        return $this->expr(
            $this->bt($this->main_table).
            '.'.
            $this->bt($fld)
        );
    }
public function getField ( $ fld ) { if ( $ this -> main_table === false ) { throw $ this -> exception ( 'Cannot use getField() when multiple tables are queried' ) ; } return $ this -> expr ( $ this -> bt ( $ this -> main_table ) . '.' . $ this -> bt ( $ fld ) ) ; }
Return expression containing a properly escaped field. Use make
subquery condition reference parent query.

@param string $fld Field in SQL table

@return DB_dsql Expression pointing to specified field
Return expression containing a properly escaped field . Use make subquery condition reference parent query .