I've chatted with support and poked around in the docs, but it doesn't seem like there's a way to send SQL to a hosted BB CRM instance and get data back.
Comparatively, Salesforce allows you to do the following, where you can send a SQL query after the q:
sandbox.my.salesforce.com/services/data/v59.0/queryAll?q=
In short, I'm looking for a simpler way to extract and send data to BB CRM without having to use a variety of SOAP endpoints etc, and the SKY APIs are limited in terms of their functionality.
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EDIT support did respond with the following: “You could write something custom which expects SQL as a string, then executes that through CLR. It's a bit of a hack but should work.”