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XQuery cts:count-aggregate

MarkLogic 12 EA 2 Product Documentation
cts.countAggregate

cts.countAggregate(
   range-index as cts.reference,
   [options as String[]],
   [query as cts.query?],
   [forest-ids as (Number|String)[]]
) as Number

Summary

Returns the count of a value lexicon. This function works like cts:count except it performs the counting in parallel in all data nodes then aggregates the values. It generally performs better than cts:count, especially on large clusters.

Parameters
range-index Reference to a range index.
options Same as the "options" parameter in cts:aggregate.
query Same as the "query" parameter in cts:aggregate.
forest-ids Same as the "forest-ids" parameter in cts:aggregate.

Example

cts.countAggregate(cts.pathReference("/path/index"));
=>
12

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