Use database function in query

[Leon Grapenthin]

The doc states

Predicates and generative functions for queries

http://docs.datomic.com/database-functions.html

But how do you invoke a database function in a query? I couldn't find this
documented anywhere.

[Francis Avila]

You can use datomic.api/invoke inside or outside a query. You can also grab
the value of the :db/fn attribute of the function entity and invoke that
value directly (although maybe not in a query--I haven't tried it).

Post by Leon Grapenthin
The doc states
Predicates and generative functions for queries
http://docs.datomic.com/database-functions.html
But how do you invoke a database function in a query? I couldn't find this
documented anywhere.