---
title: "AGE(A,B)"
slug: "engineeringdatefunction2-2"
updated: 2021-10-14T10:20:40Z
published: 2021-10-14T10:20:40Z
canonical: "docs.datajet.app/engineeringdatefunction2-2"
---

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

# AGE(A,B)

## Date Transform: AGE(A,B)

## Number of whole years between the dates represented by A and B

AGE(A,B) = B - A

## Purpose

Use this function to:

- Calculate the age of a customer at a specific point in time
- Calculate the age of a transaction at a specific point in time
- Calculate the number of whole years between two dates

## Return Value

| Property | Value |
| --- | --- |
| **FieldType** | Integer |
| **FieldSize** | Low / Med |
| **DataType** | Discrete |
| **DataSize** | Short |

```shell
Example Return Value: -N....N  where N is maximum number of years between Value(A) and Value (B)
```

![](https://cdn.document360.io/73b6469b-c1e4-47e9-aa65-986c8ebd17ca/Images/Documentation/AGE_AB_Sample.PNG)

## Parameters

| Parameter | JSON | Description |
| --- | --- | --- |
| **Table** | “targetTable”: “MyTableName” | The target table on which the new field will be created |
| **Filter** | “dataset”: {DataSet_JSON} | Optional. If a filter is applied, records not in the filter Recordset will be returned as null. |
| **DateTimeFunction** | “p1”: “AGE(A,B)” | AGE(A,B) |
| **A** | “p2”: “DateField1Name” “p2”: “#YYYY-MM-DD” | Required. Supports: Date, DateTime, Fixed Value. Fixed Value = #YYYY-MM-DD e.g. #2021-04-05 |
| **B** | “p3”: “DateFieldOrValue2” “p3”: “#YYYY-MM-DD” | Required. Supports: Date, DateTime, Fixed Value. Fixed Value = #YYYY-MM-DD e.g. #2021-04-05 |

## JSON Sample

![](https://cdn.document360.io/73b6469b-c1e4-47e9-aa65-986c8ebd17ca/Images/Documentation/AGE_AB_JSON.PNG)

## Usage Notes

To calculate current age, use the AGE(A) function. Use AGE(A,B) to calculate age in years between two fixed dates.

The number of years is calculated **FROM** B **TO** A.

## Example

| Example | Details |
| --- | --- |
| **Description** | Calculate transaction age on a specific day |
| **Input** | - Table: = [transactions] - Function: = DateTransform - **DateTimeFunction: = AGE(A,B)** - A:= [transactions].[date] - B: = #2022-01-01 - Name: =AgeIn2022 |
| **Sample** | ![](https://cdn.document360.io/73b6469b-c1e4-47e9-aa65-986c8ebd17ca/Images/Documentation/AGE_AB_Example.PNG) |