---
title: "SECSDIFF(A,B)"
slug: "datetimetransform-template-8"
updated: 2021-11-16T12:44:21Z
published: 2021-11-16T12:44:21Z
canonical: "docs.datajet.app/datetimetransform-template-8"
---

> ## 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.

# SECSDIFF(A,B)

## DateTime Transform: SECSDIFF(A,B)

## Returns difference in seconds between Time for DateTime A and Time for DateTime B

SECSDIFF(A,B) = AbsoluteSeconds(B) - AbsoluteSeconds(A)

Where

AbsoluteSeconds(B) = number of seconds from date reference (where date reference = Jan 0, 0000) to B

AbsoluteSeconds(A) = number of seconds from date reference (where date reference = Jan 0, 0000) to A

## Purpose

Use this function to:

- Calculate time between events down to the second
- Calculate the age of an event in seconds

## Return Value

| Property | Value |
| --- | --- |
| **FieldType** | Integer |
| **FieldSize** | Med / High / Continuous |
| **DataType** | Discrete / Continuous |
| **DataSize** | Integer |

```shell
Example Return Value: -N....N   where N = Max(AbsoluteSeconds(B) - AbsoluteSeconds(A))
```

![](https://cdn.document360.io/73b6469b-c1e4-47e9-aa65-986c8ebd17ca/Images/Documentation/DT_SECSDIFF_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. |
| **DateTime Function** | “p1”: “SECSDIFF(A,B)” | SECSDIFF(A,B) |
| **A** | “p2”: “DateTimeFieldName” “p2”: “#YYYY-MM-DD HH:MM:SS” | Required. DateTime A *Supports:* - **DataType:** Discrete / Continuous - **Field Type:** DateTime - ****Fixed Value:** #YYYY-MM-DD HH:MM:SS, e.g. #2021-04-05 11:01:08** |
| **B** | “p3”: “DateTimeFieldName” “p3”: “#YYYY-MM-DD HH:MM:SS” | Required. DateTime B *Supports:* - **DataType:** Discrete / Continuous - **Field Type:** DateTime - - **Fixed Value:** #YYYY-MM-DD HH:MM:SS, e.g. #2021-04-05 11:01:08 |

## JSON Sample

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

## Usage Notes

Any combination of Field/Immediate value is valid for A and B

e.g.,

`FieldA/#2019-01-02 00:00:00`

`#2020-01-02 00:00:00/#2019-01-02 00:00:00`

`FieldA/FieldB`

`#2020-01-02 00:00:00/FieldB`

See Also:

- HOURSDIFF(A,B)  (DateTime)
- MINSDIFF(A.B)    (DateTime)
- Engineering | Expression Field

## Example

| Example | Details |
| --- | --- |
| **Description** | Calculate the number of seconds between purchase and shipping |
| **Input** | - Table: = [transactions] - Function: = DateTimeTransform - **DateTimeFunction: = SECSDIFF(A,B)** - A:= [transactions].[dtPurchase] - B: = [transactions].[dtShipping] - Name: =SECSDIFF_AB |
| **Sample** | ![](https://cdn.document360.io/73b6469b-c1e4-47e9-aa65-986c8ebd17ca/Images/Documentation/DT_SECSDIFF_Example.png) |