Question

I was able to find the rows I need to update with the following code. The old_ pris is to be updated with the new_pris .
I am always one step back when it comes to update and insert operations.
As far as I know I can do a inset into and select statement as I have below for a insertion, but for update!!. Just looking if there is something I should consider looking into.

SELECT  o.no as old_no 
      ,o.name as old_name 
      ,n.kid as new_kid     
      ,o.aPris  as old_pris
       ,n.pro_pris as new_pris   

      ,n.id as new_id 

  FROM [db1].[dbv].[tb1] n 
  left join db1.dbv.tb2  o
  on n.barcode =o.code 
   where 
  o.code =n.barcode 
  and o.no !='' 
  and n.barcode !=''
  and o.code!=''

the select terms are mixed to let you know the contents of tables I am dealing with. I just need to update the old_pris by new_pris but the join and the where conditions remain same.

Answer 1

You can UPDATE with JOIN like so:

UPDATE o
SET o.aPris = n.pro_pris,
    ...
  FROM [db1].[dbv].[tb1] n 
  left join db1.dbv.tb2  o
  on n.barcode =o.code 
   where 
  o.code =n.barcode 
  and o.no !='' 
  and n.barcode !=''
  and o.code!='