summarize

grouping →
summarize(
    expression: expression
) → dictionary

Evaluates an expression once for each group and returns a dictionary from group keys to summary values.

Parameters

Name	Type	Required	Description
expression	expression	Yes	The expression evaluated against each group’s value collection.

Argument evaluation

Visits each group in the incoming grouping and supplies its entire value collection to the expression.

• expression: Evaluated once per group against that group’s entire value collection.

Examples

#{("BE" => {10, 20, 30}), ("FR" => {5, 15})} | summarize(sum) → !{("BE" => 60), ("FR" => 20)}
#{} | summarize(cardinality) → !{}

Kind: Function
Scope: grouping
Aliases: None