jfr-sql

Load before the first jfr_executeQuery or jfr_queryEvents call, whichever skill is driving the analysis: the schema of a Jeffrey profile's JFR database (events, event_types, threads, stacktraces, frames), the field names per event type, and the traps that return a wrong answer without an error — events_raw's truncated fields, ->> binding tighter than casts, root-first stacks, the row cap. Use for what no flamegraph, trace, heap or jvm dashboard tool answers: how many distinct values a field takes, a distribution over time, a correlation between event types.