---
title: bottom() function
description: bottom() sorts each input table by specified columns and keeps the bottom n records in each table.
url: https://docs.influxdata.com/flux/v0/stdlib/universe/bottom/
estimated_tokens: 1213
product: Flux
version: v0
---

# bottom() function

-   Flux 0.7.0+
-   View InfluxDB support

`bottom()` sorts each input table by specified columns and keeps the bottom `n` records in each table.

**Note:** `bottom()` drops empty tables.

##### Function type signature

```js
(<-tables: stream[A], n: int, ?columns: [string]) => stream[A] where A: Record
```

For more information, see [Function type signatures](/flux/v0/function-type-signatures/).

## Parameters

### n

(Required) Number of rows to return from each input table.

### columns

List of columns to sort by. Default is `["_value"]`.

Sort precedence is determined by list order (left to right).

### tables

Input data. Default is piped-forward data (`<-`).

## Examples

### Return rows with the two lowest values in each input table

```js
import "sampledata"

sampledata.int()
    |> bottom(n: 2)
```

[](#view-example-input-and-output)

View example input and output

#### Input data

| _time | _value | *tag |
| --- | --- | --- |
| 2021-01-01T00:00:00Z | -2 | t1 |
| 2021-01-01T00:00:10Z | 10 | t1 |
| 2021-01-01T00:00:20Z | 7 | t1 |
| 2021-01-01T00:00:30Z | 17 | t1 |
| 2021-01-01T00:00:40Z | 15 | t1 |
| 2021-01-01T00:00:50Z | 4 | t1 |

| _time | _value | *tag |
| --- | --- | --- |
| 2021-01-01T00:00:00Z | 19 | t2 |
| 2021-01-01T00:00:10Z | 4 | t2 |
| 2021-01-01T00:00:20Z | -3 | t2 |
| 2021-01-01T00:00:30Z | 19 | t2 |
| 2021-01-01T00:00:40Z | 13 | t2 |
| 2021-01-01T00:00:50Z | 1 | t2 |

#### Output data

| _time | _value | *tag |
| --- | --- | --- |
| 2021-01-01T00:00:00Z | -2 | t1 |
| 2021-01-01T00:00:50Z | 4 | t1 |

| _time | _value | *tag |
| --- | --- | --- |
| 2021-01-01T00:00:20Z | -3 | t2 |
| 2021-01-01T00:00:50Z | 1 | t2 |

#### Related

-   [InfluxQL – BOTTOM()](/influxdb/v1/query_language/functions/#bottom)

[transformations](/flux/v0/tags/transformations/) [selectors](/flux/v0/tags/selectors/)