> For the complete documentation index, see [llms.txt](https://docs.pentaho.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pentaho.com/pdia-data-integration/10.2-data-integration/pdi-transformation-steps-reference-overview/orc-input/options-orc-input-pentaho-engine/fields-orc-input-pentaho-engine.md).

# Fields

The **Fields** section contains the following items:

* A **Pass through fields from the previous step** option that allows you to read the fields from the input file without redefining any of the fields.
* A table defining data about the columns to read from the ORC file.

![ORC Input step](/files/cmoXV9fuanHAadgo9aCO)

The table in the **Fields** section defines the fields to read as input from the ORC file, the associated PDI field name, and the data type of the field. Enter the information for the ORC Input step fields as shown in the following table:

| Field                   | Description                                                                                                                                                                    |
| ----------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| **ORC path (ORC type)** | Specify the name of the field as it will appear in the ORC data file or files, and the ORC data type.                                                                          |
| **Name**                | Specify the name of the input field.                                                                                                                                           |
| **Type**                | Specify the data type of the input field.                                                                                                                                      |
| **Format**              | Specify the [date format](/pdia-data-integration/10.2-data-integration/pdi-transformation-steps-reference-overview/common-formats.md) when the **Type** specified is **Date**. |

You can define the fields manually, or you can provide a path to an ORC data file and click **Get Fields** to populate all the fields. When the fields are retrieved, the ORC type is converted into an appropriate PDI type. You can preview the data in the ORC file by clicking **Preview**. You can change the PDI type by using the **Type** drop-down or by entering the type manually.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.pentaho.com/pdia-data-integration/10.2-data-integration/pdi-transformation-steps-reference-overview/orc-input/options-orc-input-pentaho-engine/fields-orc-input-pentaho-engine.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.