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op.sample

op.sample(
   $aggColName as String,
   $columndef as String,
   [$options as String]
) as aggregatedef

Summary

This function randomly selects one non-null value of the column from the rows in the group or row set. The result is used for building the parameters used by the prototype.groupBy function.

Parameters
$aggColName The name to be used for the value.
$columndef The group or row set.
$options The options can take a values key with a distinct value to average the distinct values of the column.

Example


const op = require('/MarkLogic/optic');

op.fromView('main', 'expenses')
   .groupBy('Category', op.sample("Sample Spent", "Amount"))
   .orderBy('Category')
   .result();
   
  

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