---
title: "Parquet Deserialize"
slug: "parquet-deserialize"
updated: 2025-12-29T21:31:13Z
published: 2025-12-29T21:31:13Z
canonical: "documentation.decisions.com/parquet-deserialize"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://documentation.decisions.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Parquet Deserialize

| Step Details |
| --- |
| **Introduced in Version** | 9.11 |
| **Last Modified in Version** | -- |
| **Location** | Data > Parquet |

The Parquet Deserialize step extracts values from a parquet file and converts the values into a data structure defined by the User.

---

## Properties

#### Parameters

| Property | Description | Data Type |
| --- | --- | --- |
| Type | Allows Users to select a defined data structure. | -- |

#### Inputs

| Property | Description | Data Type |
| --- | --- | --- |
| Parquet File | Allows Users to upload a Parquet file. | File Data |

#### Outputs

| Property | Description | Data Type |
| --- | --- | --- |
| Output | The Ouput of the step is the deserialized output of the uploaded Parquet file. | String |

#### Error

| Property | Description | Data Type |
| --- | --- | --- |
| Error Message | If an error occurs an error message will be displayed. | String |

## ![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/2025-12-29_15h56_57.png)

---

## Example Inputs and Outputs

#### ![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/2025-12-29_16h00_05.png)

```none
Inputs: {
Id: 
FileName: 
Length: 
FileType: 
}
}

OUTPUTS: [
0: {
path:
data: {
Output: [
0: {
PassengerId: 
Survived: 
Pclass: 
Name: 
Sex: 
Age: 
SibSp: 
Parch: 
Ticket:
Fare: 
Cabin: 
Embarked: 
}

1: {
PassengerId: 
Survived: 
Pclass: 
Name: 
Sex: 
Age: 
SibSp: 
Parch: 
Ticket: 
Fare: 
Cabin: 
Embarked:
```

## Step Changes

| Description | Version | Date | Developer Task |
| --- | --- | --- | --- |
| Added the Parquet to List Mapping step, that will change a Parquet file to a List. | [9.11](https://documentation.decisions.com/v99/docs/version-911x-release-notes?highlight=DT-044204) | May 2025 | DT-044204 |