# Filters

### In this section

* [SingleIndex](https://help.qlik.com/talend/en-US/data-mapper-functions-reference-guide/8.0-R2024-07/singleindex-function)
* [IsValid](https://help.qlik.com/talend/en-US/data-mapper-functions-reference-guide/8.0-R2024-07/isvalid-function)