---
title: tableFind() function
description: >
  `tableFind()` extracts the first table in a stream with group key values that
  match a specified predicate.
menu:
  flux_v0_ref:
    name: tableFind
    parent: universe
    identifier: universe/tableFind
weight: 101
flux/v0/tags: [dynamic queries]
introduced: 0.29.0
---

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`tableFind()` extracts the first table in a stream with group key values that
match a specified predicate.



##### Function type signature

```js
(<-tables: stream[B], fn: (key: A) => bool) => stream[B] where A: Record, B: Record
```

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

## Parameters

### fn
({{< req >}})
Predicate function to evaluate input table group keys.

`tableFind()` returns the first table that resolves as `true`.
The predicate function requires a `key` argument that represents each input
table's group key as a record.

### tables

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




## Examples

### Extract a table from a stream of tables

```js
import "sampledata"

t =
    sampledata.int()
        |> tableFind(
            fn: (key) => key.tag == "t2",
        )// t represents the first table in a stream whose group key
// contains "tag" with a value of "t2".


```