colenum

Type of operation: Metadata

Description

Mark columns as enumerations, or not, by name. Arguments are colname:bool where the bool value must be known at compile time. Columns that are enumerations are treated differently in GUI and visualization, such as using top-k summaries instead of histograms or sparklines.

Usage

colenum col ...

Argument

Type

Required

Multiple

col

expression

Required

Can be multiple

Accelerable

colenum is always accelerable if the input is accelerable. A dataset that only uses accelerable verbs, can be accelerated, making queries on the dataset respond faster.

Examples

colenum cluster_uid:false, cluster_index:false, cluster_name: true

Marks the columns cluster_uid and cluster_index as scalar values, and marks the column cluster_name as an enumeration value.