Can I combine these updates?

Question

Hi,
I wondered if there was a way to combine the two update statements below into one statement?
Basically the queries are the same, but I just want to update the column with a different value depending on the value of t2.name
UPDATE mydetails
SET    col1= decode(col1, null, null, 1)
WHERE  (col2, col3) in                              
      SELECT     
           t3.value
          ,t3.id
      FROM   
           t1     
          ,t2             
          ,t3   
      WHERE  
          t1.id     = t2.id
      AND t1.id  = t3.id
      AND     t2.Name          <> 'NOENTRY'       
UPDATE mydetails
SET    col1= decode(col1, null, null, 999)
WHERE  (col2, col3) in                              
      SELECT     
           t3.value
          ,t3.id
      FROM   
           t1     
          ,t2             
          ,t3   
      WHERE  
          t1.id     = t2.id
      AND t1.id  = t3.id
      AND     t2.Name          = 'VERIFIED'       
);Many thanks.
Edited by: skulls on 13-Jul-2010 21:43 Copy and paste error

Answer 1

When update table using other table's values,
merge statement is often more useful than update statement.
I can use both merge statement and update statement B-) B-) B-)
I always choose one.It depends on which is useful to solve update table problems B-) B-) B-)
There is the good news.
You can rewrite below simpler one.
Because when a.col1 is null you do NOT have to update.
merge mydetails a
using(SELECT 
         t3.value
        ,t3.id ,t2.Name
     FROM   
         t1
        ,t2    
        ,t3   
     WHERE  
        t1.id   = t2.id
     AND t1.id  = t3.id
     AND    t2.Name !='NOENTRY') b
on (a.col2=b.value and a.col3=b.id and a.col1 is not null)
when matched then
update set a.col1 = case when b.Name = 'VERIFIED'
                         then 999 else 1 end;