// This is generated by ESQL's AbstractFunctionTestCase. Do no edit it. See ../README.md for how to regenerate it. *Parameters* `field`:: Column or literal for which to count the number of distinct values. `precision`:: Precision threshold. Refer to <>. The maximum supported value is 40000. Thresholds above this number will have the same effect as a threshold of 40000. The default value is 3000.