rollup()
Roll up multiple `tdigest`s
Since 1.0.0
Combine multiple intermediate tdigest aggregates, produced by tdigest, into a single intermediate tdigest
aggregate. For example, you can use rollup to combine tdigests from 15-minute buckets into daily buckets.
Arguments
Section titled “Arguments”The syntax is:
rollup( digest TDigest) RETURNS TDigest| Name | Type | Default | Required | Description |
|---|---|---|---|---|
| digest | TDigest | - | ✔ | The tdigests to roll up |
Returns
Section titled “Returns”| Column | Type | Description |
|---|---|---|
| rollup | TDigest | A new tdigest created by combining the input tdigests |