How to insert with where clause

Question

I am using the following query to insert values into one field in table A.

insert
into A (name)
values (\'abc\')
where
   A.id=B.code
   and B.dept=\'hr\' ;
         


        

Answer 1

MERGE
INTO a
USING (
  SELECT *
  FROM b
  WHERE b.dept = 'hr'
)
ON a.id = b.code
WHEN NOT MATCHED THEN
  INSERT (id, name)
  VALUES (code, 'abc')
WHEN MATCHED THEN
  UPDATE
  SET name = 'abc'