Question

There are duplicate records which show the same values in each column.  

Environment

Connector: Google Ads

Answer

The _fivetran_id column identifies unique records. 

To see Google values that differ for the same rows:

1. Create a new report
2. Configure the report to include *Id columns.
   Example: for the keyword_performance_report, configure the id and AdGroupId columns

Cause

The cause of the perceived duplicate is due to an Adwords feature - Implicit Segmentation. This may produce report rows with same set of attributes/segments and different (or even the same) metrics. 

Based on the fields you have configured, the records appear to be duplicates.