While Cluvio is a SQL-based analytics tool and for most of its functionality requires a connection to a SQL database or data warehouse, an exception is working with data from Google Sheets spreadsheets.
In addition to the common ETL-based approach to pull data from non-SQL sources, you can use the R support in Cluvio to pull data from a sheet using the googlesheets4 R library. This data can then be combined with SQL results (if desired), processed in R, or used directly to render via any of the standard charts in Cluvio.
Note: Google Sheets needs to be accessed via a link that has the "Anyone with the link can view" permission.
Here is R code for a working example with some dummy data from this google sheet: