---
title: "DiscreteIntegerSequence"
slug: "discreteintegersequence"
updated: 2022-09-26T10:07:26Z
published: 2022-09-26T10:07:26Z
canonical: "docs.datajet.app/discreteintegersequence"
---

> ## 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.

# DiscreteIntegerSequence

## General: DiscreteIntegerSequence

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

## Purpose

Use this function to:

- Create a unique primary key on an existing table of less than 1 million rows
- Identify and select specific records by row number
- Create a record key for use in preparing source data for modelling

## Return Value

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

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

![DiscreteIntegerSequence_Sample](https://cdn.document360.io/73b6469b-c1e4-47e9-aa65-986c8ebd17ca/Images/Documentation/DiscreteIntegerSequence_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. |
| **Function** | "function":"DiscreteIntegerSequence" | DiscreteIntegerSequence |

## JSON Sample

```json
{
  "method": "BuildBakedField",
  "project": "Model1",
  "targetTable": "worldcities",
  "overwrite": true,
  "name": "KeyField",
  "function": "discreteintegersequence"
}
```

## Usage Notes

See Also:

- Engineering | Expression Field
- [LongSequenceKey (General Functions)](https://datajet.document360.io/v1/docs/longsequencekey)
- [IntegerSequenceKey (General Functions)](/v1/docs/integersequencekey)
- [MakeContinuousKey (General Functions)](https://datajet.document360.io/v1/docs/makecontinuouskey)

## Example

| Example | Details |
| --- | --- |
| **Description** | Create a discrete key field to give each worldcity an ID |
| **Input** | - Table: = [worldcities] - Filter: = [No Filter] - **Function: = DiscreteIntegerSequence** - Name: =KeyField |
| **Sample** | ![DiscreteIntegerSequence_Example](https://cdn.document360.io/73b6469b-c1e4-47e9-aa65-986c8ebd17ca/Images/Documentation/DiscreteIntegerSequence_Example.PNG) |