I am performing merge operation on my delta table in spark. I have existing delta table , it already has some records. Now I created another dataframe of csv file, and added one new record and updated one records in that. Please check below snip.
(df_source) is the updated table(temp view)
Now after performing merge operation. The logs generated here are not correct in updated records it shows 3 records updated i have updated only one record. for inserted it shows correctly i have issue with update why it is updating all the records.
Can you please help me to understand what's happening behind the scenes.
