andygrove opened a new issue, #7724:
URL: https://github.com/apache/arrow-datafusion/issues/7724
### Is your feature request related to a problem or challenge?
A source of confusion for new users is why we have Schema/SchemaRef as well
as DFSchema/DFSchemaRef and how to convert between the two.
Here is a quick answer I gave to someone recently. Would be good to add a
section about the type system to the user guide, perhaps before introducing
TableProvider.
```
DFSchema is similar to Schema, but adds optional qualifiers (table names).
You can convert from Schema by calling
DFSchema::try_from_qualified_schema(Some("table_name"), arrow_schema). There is
also DFField::from_qualified.
```
### Describe the solution you'd like
More docs
### Describe alternatives you've considered
_No response_
### Additional context
_No response_
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