Want to add some conditions in MERGE statement in oracle sql for insert/update

Question

I have to insert/update some RECORDS in table target_table. These records are coming one source_table.

I am using MERGE for update/insert in target_table. Query is as b

Answer 1

You can simply add WHERE clause to UPDATE. More about it in oracle docs.

So in your case it should look like:

...
WHEN MATCHED
THEN
   UPDATE
   SET   tgt.column3= src.column3,
         tgt.column4 = src.coulmn4
   WHERE tgt.column3 IN (val1, val2) 
WHEN NOT MATCHED
...