tdigest_combine(digest: tdigest) -> digest

Combine (merge) multiple t-digest values together This function is purely an aggregate function.

Domain

This is an aggregate function (aggregates rows over a group in aggregate verbs).

This is a window function (calculates over a group of multiple input rows using windowing).

Categories

• Aggregate
• Window

Examples

statsby state:tdigest_combine(tdigest_col), group_by(^Cluster...)

Combine tdigest values of tdigest_col (of type tdigest) into one tdigest state, per Cluster.