How do I SELECT all fields in frontmatter without listing them one by one?

[blvckmvgicdotexe]

My frontmatter looks something like

---
field1: false
field2: "some string"
field3: 2021-05-15
---

Now, I would like to do something like

table * from "/folder" where <etc..>

instead of enumerating all of the fields, à la SQL
Also it would be nice to be able to differentiate between frontmatter fields, inline fields etc..