Thanks for reply. I have a raw data index=account_information. In the raw data, each entry has fields such as account_number, cell_number, customer_name, address, product, etc. The raw data has (let's say) a million entries. I want to search several hundred customer's cell_number, by the known account_number. I copied accont_number in a csv file and uploaded. wandering how to use the csv. Will look into "lookup".
... View more