Oracle Update Query using Join

Question

I am trying to update the amount using Join but getting exception:

UPDATE tab1
   SET tab1.total_adjusted_cost = tab1.total_adjusted_cost + t1.total
 FROM ta         


        

Answer 1

group is a keyword in sql. You have to escape it.

 UPDATE tab1 SET tab1.total_adjusted_cost = tab1.total_adjusted_cost + t1.total
FROM table1 tab1, 
  (SELECT tab3.name, tab3."add", SUM(tab2.amount) AS total
  FROM table2 tab2,
    table3 tab3 ,
    table4 tab4
  WHERE tab2.id        = tab3.id
  AND tab3.id            = tab4.id
  AND tab4.indicator             ='Y'
  GROUP BY tab3.name,
    tab3."add"
) t1
WHERE tab1.id      = t1.id