SQL update top1 row query

Question

The query below is working:

update  top(1) ShipBillInfo 
set     shipfirstname=\'kkk\' 
where   CustomerId=\'134\';

but it is showing error

Answer 1

why dont you do :

update ShipBillInfo 
set shipfirstname='kkk' 
where OrderGUID = (select top (1) OrderGUID  
                   from ShipBillInfo 
                   where CustomerId = 134 
                   order by OredrGUID desc )