---
title: "IntegerSequenceKey"
slug: "integersequencekey"
updated: 2022-09-26T09:56:01Z
published: 2022-09-26T09:56:01Z
canonical: "docs.datajet.app/integersequencekey"
---

> ## 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.

# IntegerSequenceKey

## General: IntegerSequenceKey

## Produces a field that is the record number in a table, stored as a continuous integer.

## Purpose

Use this function to:

- Create a unique primary key on an existing table
- Identify and select specific records by number

## Return Value

| Property | Value |
| --- | --- |
| **FieldType** | Integer |
| **FieldSize** | Continuous |
| **DataType** | Continuous |
| **DataSize** | Integer |

```shell
Example Return Value: 1.....N    where N = number of records in the table.
```

FieldSize and DataSize will depend on the number of records in the table:

- IntegerSequenceKey will always be a Continuous DataSize.    See **FieldTypes and DataType** for more information.
- IntegerSequenceKey is valid for up to 2 billion records (+- 231 -1).  For tables larger than this, see LongSequenceKey
- On tables of less than 1 million rows, DiscreteIntegerSequence can be used to create an indexed key

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

## Parameters

| Parameter | JSON | Description |
| --- | --- | --- |
| **Table** | “targetTable”: “MyTableName” | The target table on which the new field will be created |
| **Filter** | “dataset”: {DataSet_JSON} | **NOT USED** |
| **Function** | "function":"integersequencekey" | IntegerSequenceKey |

## JSON Sample

```json
{
  "method": "BuildBakedField",
  "project": "D3",
  "targetTable": "transactions",
  "overwrite": true,
  "name": "IntegerKey",
  "function": "integersequencekey"
}
```

## Usage Notes

IntegerSequenceKey does not support filters.

See Also:

- Engineering | Expression Field
- [LongSequenceKey (General Functions)](/v1/docs/longsequencekey)
- [DiscreteIntegerSequence (General Functions)](/v1/docs/discreteintegersequence)
- [MakeContinuousKey (General Functions)](/v1/docs/makecontinuouskey)

## Example

| Example | Details |
| --- | --- |
| **Description** |  |
| **Input** | - Table: = [transactions] - Filter: = [No Filter] - **Function: = IntegerSequenceKey** - Name: =IntegerKey |
| **Sample** | ![](https://cdn.document360.io/73b6469b-c1e4-47e9-aa65-986c8ebd17ca/Images/Documentation/Gen_IntSeqKey_Example.png) |