You don't really use dynamic datalog queries with DDlog. Instead you write rules that handle your queries in a streaming fashion ("prepare" statement at compile

You don't really use dynamic datalog queries with DDlog. Instead you write rules that handle your queries in a streaming fashion ("prepare" statement at compile time, stream tuples of parameters at runtime and listen for outputs), if you can't afford to keep a materialized view up-to-date that turns your queries into simple KV-lookup operations. But, do not worry: Support for run-time rule updates is in the works and would allow for arbitrary dynamic datalog queries.