Choropleth - ISO Lowercase



I am using redash, and some of our dbs store country codes in lowercase. The Choropleth visualization is able to auto detect that they are ISO 2 character country codes, but is unable to graph them. With our data sets that have country codes store in uppercase, we have no issues.

Is the choropleth visualization case sensitive? We are working with a db that doesn’t have to upper functionality, so it’s not something we can work around on our side.