I am running into the same problem as in this closed issue:
When I do an SQL query including latitude and longitude fields, the result does not let those fields be used for map visualizations because it is not recognizing them as latitude and longitude fields.
I am using version v0.40.1.
Is there any workaround or other way that I can do a query combining tables and use the result for map visualizations?
My strongest suggestion is to upgrade to the latest version, as you're running a version that has a lot of bugs. Also, your version has a lot of security issues.