# Using regular expressions on Teradata

Available in...

* Big Data Platform
* Cloud API Services Platform
* Cloud Big Data Platform
* Cloud Data Fabric
* Cloud Data Management Platform
* Data Fabric
* Data Management Platform
* Data Services Platform
* Qlik Talend Cloud Enterprise Edition
* Qlik Talend Cloud Premium Edition
* Real-Time Big Data Platform

To identify incorrect data, you can use Pattern indicators. These indicators use regular expression to work. In Teradata, the regular expression function is only installed by default starting from version 14.

To use the regular expression function in a Teradata version prior to 14, you need to install a user-defined function (UDF) function.

### In this section

* [Editing the pattern indicator and using it in a column analysis](https://help.qlik.com/talend/en-US/studio-user-guide/8.0-R2026-09/editing-pattern-indicator-and-using-it-in-column-analysis)
* [Using the Pattern Test view](https://help.qlik.com/talend/en-US/studio-user-guide/8.0-R2026-09/using-pattern-test-view)