# Column medicare.enrollments.bene

## Overview of column bene in table medicare.enrollments 

|                               |                        |
| ----------------------------- | ---------------------- |
| Table                         | [medicare.enrollments](../medicare.enrollments.md)           |
| Qualified name                | medicare.enrollments.bene  |
| Datatype                      | HLL_HASHVAL        |
| Column type | generated |
| Reference | [https://github.com/citusdata/postgresql-hll/blob/master/REFERENCE.md#basic-operational-functions](https://github.com/citusdata/postgresql-hll/blob/master/REFERENCE.md#basic-operational-functions) |


HLL hash (see https://en.wikipedia.org/wiki/HyperLogLog).
Can be used to calculate number of beneficiaries
satisfying a certain given condition
Use #(hll_add_agg(bene)) or hll_cardinality(hll_add_agg(bene)) aggregator





## Expressions

```sql
SELECT GENERATED ALWAYS AS (hll_hash_text(bene_id)) STORED
```


```{toctree}
---
maxdepth: 1
hidden:
---
bene_svg_envelop.md
```


```{figure} bene.svg
:align: center
:alt: Column medicare.enrollments.bene Lineage SVG
:target: bene_svg_envelop.html

Data lineage for column medicare.enrollments.bene

```