# tQVDInput

Available in...

* Qlik Talend Cloud Enterprise Edition
* Qlik Talend Cloud Premium Edition

Reads data from QVD files for use in Talend Studio Jobs.

This component is available for Qlik Talend Cloud Premium Edition and Qlik Talend Cloud Enterprise Edition.

## tQVDInput standard properties

These properties are used to configure tQVDInput running in the Standard Job framework.

The Standard tQVDInput component belongs to the File family.

## Basic settings

| Properties | Description |
| --- | --- |
| Property type | Either Built-in or Repository.<br><br><ul> <li><span>Built-in</span>: No property data stored centrally.</li> <li><span>Repository</span>: Select the repository file in which the                        properties are stored. The fields that follow are completed automatically                        using the data retrieved.</li> </ul> |
| Schema and Edit schema | A schema is a row description. It defines the number of fields<br>(columns) to be processed and passed on to the next component. When you create a Spark<br>Job, avoid the reserved word line when naming the<br>fields.<br><br><ul> <li> <p> <span>Built-In</span>: You create and store the schema locally for this component                only.</p> </li> <li> <p> <span>Repository</span>: You have already created the schema and stored it in the                Repository. You can reuse it in various projects and Job designs.</p> </li> </ul><br><br>Click Edit schema to make changes to<br>the schema. If you make changes, the schema automatically becomes built-in.<br><br><ul> <li> <p> <span>View schema</span>: choose this                option to view the schema only.</p> </li> <li> <p> <span>Change to built-in property</span>:                choose this option to change the schema to <span>Built-in</span> for local changes.</p> </li> <li> <p> <span>Update repository connection</span>:                choose this option to change the schema stored in the repository and decide whether                to propagate the changes to all the Jobs upon completion.</p> <p>If you just want to                propagate the changes to the current Job, you can select <span>No</span> upon completion and choose this schema metadata                again in the <span>Repository Content</span>                window.</p> </li> </ul> |
| File name | Enter the path and name of the QVD file to read. |
| Guess schema | Click this button to infer the schema from the QVD header. You can use the<br>inferred schema as a static schema, or adapt it to a dynamic schema if needed. |

## Advanced settings

| Properties | Description |
| --- | --- |
| tStatCatcher Statistics | Select this checkbox to collect the log data at the component<br>level. |
| Read as dual | Select this checkbox to read QVD dual values as objects. Clear this checkbox<br>to read simple values. |

## Global Variables

| Variables | Description |
| --- | --- |
| ERROR\_MESSAGE | The error message generated by the component when an error occurs. This is an<br>After variable and it returns a string. |
| NB\_LINE | The number of rows read by an input component or transferred to an output component. This is an After variable and it returns an integer. |

**Related tasks**

* [Reading a QVD file about patient data](https://help.qlik.com/talend/en-US/components/8.0/qlik-cloud/tqvdinput-reading-a-qvd-file-about-patient-data-standard-component "Reads a patient-data QVD file in a Standard Job and displays the records in the Run console.")