Use Caselink
You have received a Duplicate Columns alert on your Fivetran dashboard or have observed a duplicate columns log in the Fivetran Log Connector’s destination schema.
You have checked your source system and cannot identify any duplicate columns.
Recommendationlink
Change your source system’s column naming convention to work within the parameters of Fivetran’s naming conventions.
Contextlink
Fivetran’s naming conventions may identify columns as duplicates even if your source system enforces uniqueness in the naming convention.
For example, consider the following unique column names:
systemIDsystem__IDsystem_ID
One column name uses camel case, one has a double underscore, and one has a single underscore. However, Fivetran normalizes all the column names to the same column name, system_id.
Considerationslink
There may be scenarios where Fivetran excludes duplicate columns from being written to the destination. If you don’t require the excluded data for your downstream modeling, deselect those columns from your syncs and leave the source naming conventions as they are.