OPAL Verbs By Category#

Verb

Description

Aggregate verbs

Aggregate verbs establish an aggregate context: multiple input rows generate fewer, summarizing, output rows.

Filter verbs

Filter verbs select particular rows from the input row set, emitting the matches as output.

Join verbs

Join verbs link multiple datasets together.

Metadata verbs

Metadata verbs modify the metadata of the dataset and the columns in the dataset, rather than directly acting on the data itself.

Metrics verbs

Metrics verbs create, aggregate, or normalize time series values.

Projection verbs

Projection verbs create, remove, or rename columns in a dataset.

Semistructured verbs

Semistructured verbs act upon, or produce, arrays or objects that are treated as scalars.

All OPAL Verbs