You can query Vertica directly from excel. I did it and it works, just download the ODBC driver, install the driver, setup DNS and follow to instructions.
For version 7. x, read here
Full documentation: Installing the Client Drivers and Tools on Windows
- Download Windows Client Drivers from here. Excel requires ODBC drivers.
- Install drivers(double click on exe file -> next -> next -> profit!!).
- Set up ODBC DNS, instructions are here
- Follow to instructions here
- profit!