# Comparaison et Logique

### Dans cette section

* [IfThen](https://help.qlik.com/talend/fr-FR/data-mapper-functions-reference-guide/8.0-R2026-02/ifthen-function)
* [IfThenElse](https://help.qlik.com/talend/fr-FR/data-mapper-functions-reference-guide/8.0-R2026-02/ifthenelse-function)
* [Choice](https://help.qlik.com/talend/fr-FR/data-mapper-functions-reference-guide/8.0-R2026-02/choice-function)
* [ChoiceValue](https://help.qlik.com/talend/fr-FR/data-mapper-functions-reference-guide/8.0-R2026-02/choicevalue-function)
* [Equal (Égal)](https://help.qlik.com/talend/fr-FR/data-mapper-functions-reference-guide/8.0-R2026-02/equal-function)
* [Lesser](https://help.qlik.com/talend/fr-FR/data-mapper-functions-reference-guide/8.0-R2026-02/lesser-function)
* [LesserOrEqual](https://help.qlik.com/talend/fr-FR/data-mapper-functions-reference-guide/8.0-R2026-02/lesserorequal-function)
* [Greater](https://help.qlik.com/talend/fr-FR/data-mapper-functions-reference-guide/8.0-R2026-02/greater-function)
* [GreaterOrEqual](https://help.qlik.com/talend/fr-FR/data-mapper-functions-reference-guide/8.0-R2026-02/greaterorequal-function)
* [And (Et)](https://help.qlik.com/talend/fr-FR/data-mapper-functions-reference-guide/8.0-R2026-02/and-function)
* [false](https://help.qlik.com/talend/fr-FR/data-mapper-functions-reference-guide/8.0-R2026-02/false-function)
* [NotEqual](https://help.qlik.com/talend/fr-FR/data-mapper-functions-reference-guide/8.0-R2026-02/notequal-function)
* [Or (Ou)](https://help.qlik.com/talend/fr-FR/data-mapper-functions-reference-guide/8.0-R2026-02/or-function)
* [Not](https://help.qlik.com/talend/fr-FR/data-mapper-functions-reference-guide/8.0-R2026-02/not-function)
* [HasValue](https://help.qlik.com/talend/fr-FR/data-mapper-functions-reference-guide/8.0-R2026-02/hasvalue-function)
* [IsPresent](https://help.qlik.com/talend/fr-FR/data-mapper-functions-reference-guide/8.0-R2026-02/ispresent-function)
* [IsNull](https://help.qlik.com/talend/fr-FR/data-mapper-functions-reference-guide/8.0-R2026-02/isnull-function)
* [true](https://help.qlik.com/talend/fr-FR/data-mapper-functions-reference-guide/8.0-R2026-02/true-function)
* [Exemples de fonctions de comparaison et logiques](https://help.qlik.com/talend/fr-FR/data-mapper-functions-reference-guide/8.0-R2026-02/comparison-and-logical-functions-examples)