A query within the correlate() function that enriches constellations with additional aggregated data—such as counts, sums, or other aggregate values—without affecting whether constellations are found. Aggregation queries run after LogScale identifies a valid constellation. They compute additional values based on events that match their filters and constraints. If an aggregation query matches zero events, the constellation is still emitted. Aggregation queries are distinct from mandatory queries, which define the core pattern required for a constellation to exist.