Table update from T-SQL question

Question

Ok, I have a T-SQL query that I'm trying to convert in Oracle SQL.
Here is the T-SQL:
Update E
Set field1 = 'some text',
field2 = NULL
from table1 E
Left join table2 A
On e.fieldx = a.fieldx
and e.fieldy = a.fieldy
I think I'm close, but I'm not sure about the left join:
Update table1 E
set (field1, field2) = (
select 'sometext', NULL
from table2 A
where a.fieldx = e.fieldx
and a.fieldy = e.fieldy)
What can I do to fix this?
Thanks.

Answer 1

The equivalent to your T-SQL Query would be:
Update table1 E
set (field1, field2) = (
select 'sometext', NULL
from table2 A
where a.fieldx (+) = e.fieldx
and a.fieldy (+) = e.fieldy);
But since you don't do anything with the columns from table A and it is left joined, you can simply write:
Update table1 E
set field1 = 'sometext', field2 = NULL ;