# tPatternCheck

Gives two output flows: Matching Data and Non-Matching Data. The first collects all data that match a given pattern, and the second collects all data that do not match a given pattern. You can then implement any required corrections.

The tPatternCheck checks all existing data in a column against a given Java regular expression.

For more technologies supported by Talend, see [Talend components](https://help.qlik.com/talend/r/en-US/7.3/components/pattern-validation).

### In this section

* [tPatternCheck Standard properties](https://help.qlik.com/talend/en-US/components/7.3/pattern-validation/tpatterncheck-standard-properties)