SQL coverage issue with Tableau

## Why are we implementing it? (sales eng)

### What are the typical use cases?

TODO: Sai will update with an issue that a customer reported. Ozgun will tell him more.

## Communication goals (e.g. detailed howto vs orientation)

### Good locations for content in docs structure

A note in http://docs.citusdata.com/en/v7.5/develop/integrations.html#business-intelligence-with-tableau

## How does this work? (devs)

### Example sql

### Corner cases, gotchas

### Are there relevant blog posts or outside documentation about the concept/feature?

### Link to relevant commits and regression tests if applicable