---
title: "cardinality · RUAL Documentation"
description: "Counts the approximate number of distinct values for the specified field."
canonical: https://docs.rual.nl/block-types/aggregation/aggregation_type_cardinality_bp_field
language: en
---

# cardinality

This block is part of the [`aggregation`](https://docs.rual.nl/block-types/aggregation) group and was last modified in core [`v10.4.28`](https://docs.rual.nl/core-versions/100428).

Counts the approximate number of distinct values for the specified field.

| `unique on field` |
| --- |
| `distinct` |

### Core Releases