--- title: How to uniquify a list based on an attribute in Mendix description: The post discusses the importance of accurate and unique data in applications, specifically in the context of Mendix. It explores different methods for... canonical: https://daily.dev/posts/how-to-uniquify-a-list-based-on-an-attribute-in-mendix-wjfhscvmf twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: How to uniquify a list based on an attribute in Mendix | daily.dev og:description: The post discusses the importance of accurate and unique data in applications, specifically in the context of Mendix. It explores different methods for... og:url: https://daily.dev/posts/how-to-uniquify-a-list-based-on-an-attribute-in-mendix-wjfhscvmf og:image: https://api.daily.dev/og/posts/WJFhScVmF.png og:image:alt: How to uniquify a list based on an attribute in Mendix og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # How to uniquify a list based on an attribute in Mendix **[ITNEXT](https://daily.dev/sources/itnext)** · 8 min read · 0 upvotes · 0 comments ## Summary The post discusses the importance of accurate and unique data in applications, specifically in the context of Mendix. It explores different methods for retrieving and processing data to ensure uniqueness, including OQL queries, find list operations, XPath constraints, and Java actions. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#data-processing](https://daily.dev/tags/data-processing), [#data-retrieval](https://daily.dev/tags/data-retrieval) [View this post on daily.dev](https://daily.dev/posts/how-to-uniquify-a-list-based-on-an-attribute-in-mendix-wjfhscvmf) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"How to uniquify a list based on an attribute in Mendix","url":"https://daily.dev/posts/how-to-uniquify-a-list-based-on-an-attribute-in-mendix-wjfhscvmf","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/how-to-uniquify-a-list-based-on-an-attribute-in-mendix-wjfhscvmf"},"datePublished":"2024-03-25T09:28:31.830Z","dateModified":"2025-09-06T02:34:21.052Z","description":"The post discusses the importance of accurate and unique data in applications, specifically in the context of Mendix. It explores different methods for...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/72c826b8a221cd6b720035edc02f5350?_a=AQAEufR","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/72c826b8a221cd6b720035edc02f5350?_a=AQAEufR","isAccessibleForFree":true,"articleSection":"ITNEXT","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"ITNEXT","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/itnext2","url":"https://daily.dev/sources/itnext"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/how-to-uniquify-a-list-based-on-an-attribute-in-mendix-wjfhscvmf","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"data-processing,data-retrieval","timeRequired":"PT8M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"ITNEXT","item":"https://daily.dev/sources/itnext"},{"@type":"ListItem","position":3,"name":"How to uniquify a list based on an attribute in Mendix"}]} ```