---
title: Create a Custom Hash Key in Jet Analytics
description: "In data warehousing, a **hash key** is a unique identifier generated by combining multiple fields into a single hashed value. It's especially useful when you want to track changes or ensure data integrity in your tables—without relying on long strings…"
url: "https://globaldata365.com/helpcenter/create-a-custom-hash-key-in-jet-analytics/"
updated: "2026-10-25"
category: Jet Analytics
---

# Create a Custom Hash Key in Jet Analytics

In data warehousing, a **hash key** is a unique identifier generated by combining multiple fields into a single hashed value. It's especially useful when you want to track changes or ensure data integrity in your tables—without relying on long strings or composite keys. Think of it as a smart way to create a digital fingerprint for each record based on key data points. In [Jet Analytics](https://youtu.be/sTzRhP_AAqc), you can create a custom hash key in a table by combining fields of your choice.

 

## How to Create a Custom Hash Key in Jet Analytics?

 

Creating a custom hash key in [Jet Analytics](https://globaldata365.com/jet-analytics/) (using [Jet Data Manager](https://globaldata365.com/jet-data-manager-training/)) is super easy. Here’s how you can do it step by step:

 

#### 1. Right-Click the Table

Find the table you want to work with (like the *Customer* table), right-click it, and choose **"Add Custom Hash Field"**.

#### ![create custom hash key in jet analytics](https://globaldata365.com/wp-content/uploads/2025/06/create-custom-hash-key-in-jet-analytics-300x255.webp)

#### 2. Pick the Fields

A window will pop up. Just tick the boxes for the fields you want to include in your hash key.
For example, you might choose:

- `Company`
- `No`
- `Name`

These will be used to generate your unique code.
![create custom hash key](https://globaldata365.com/wp-content/uploads/2025/06/create-custom-hash-key-230x300.webp)

> 🔄 **Note:** The order matters!
> "Company → No → Name" will create a different code than "Company → Name → No".

#### 3. Give It a Name

You can rename the hash field if you want—something simple like `CustomerHashKey`.

 

#### 4. Deploy and Run

Now just deploy the table and run it. Done! You’ll see a new column with your custom hash key.
![custom hash key in jet](https://globaldata365.com/wp-content/uploads/2025/06/custom-hash-key-in-jet-300x177.webp)

 

 **Want to turn raw ERP data into powerful business insights?**
[👉 Join our Jet Analytics Training](https://globaldata365.com/jet-analytics-training/) and master building data warehouses, cubes, and advanced dashboards.

## Why Use Hash Key?

- Keeps your data organized and clean
- Makes it easier to track changes over time
- Speeds things up behind the scenes

A hash key may seem like a small detail, but it plays a big role in organizing and keeping your data management efficient and reliable.

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###### Still have Questions?

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