docs-v2/content/flux/v0/stdlib/universe/tablefind.md

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---
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".
```