I am implementing application specific data import feature from one database to another.
I have a CSV file containing say 10000 rows. These rows need to be inserted/updated into database.
There might be the case, where couple of rows may present in database that means those need to be updated. If not present in database, those need to be inserted.
One possible solution is that, I can read one by one line, check the entry in database and build insert/update queries accordingly. But this process may take much time to create update/insert queries and execute them in database. Some times my CSV file may have millions of records.
Is there any other faster way to achieve this feature?