Apache Pinot Docs
latest
Ask or search…
K
Comment on page

percentiletdigest

This section contains reference documentation for the PERCENTILETDIGEST function.
Returns the Nth percentile of the group using T-digest algorithm. An optional compression_factor can be specified to control the accuracy with a tradeoff in memory usage (i.e. higher compression_factor gives better accuracy but takes more memory). The default compression_factor is 100.

Signature

PERCENTILETDIGEST(colName, percentile)
PERCENTILETDIGEST(colName, percentile, compression_factor)

Usage Examples

These examples are based on the Batch Quick Start.
select PERCENTILETDIGEST(homeRuns, 50, 1000) AS value
from baseballStats
value
0
select PERCENTILETDIGEST(homeRuns, 80) AS value
from baseballStats
value
3.6571905392487856
select PERCENTILETDIGEST(homeRuns, 99.9) AS value
from baseballStats
value
46.26787306220119