OPAL Special Functions#

Special functions implement flow control-like structures or other control semantics.

Function

Description

case

Return a matching result if any of the multiple given conditions are true.

group_by

Grouping/partitioning in which to process data.

m

Select a metric for the align verb.

metric

Select the metrics in the rollup verb.

options

Specify options to change the verb’s behavior

primary_key

Specify the primary key for some verbs

valid_for

Specify the validity period for each event for some verbs

window

Evaluate OPAL within time windows.