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Merging Streams of Convex data

Blog post from Convex

Post Details
Company
Date Published
Author
Lee Danilek
Word Count
4,074
Language
English
Hacker News Points
-
Summary

The text provides an in-depth explanation of how to utilize the convex-helpers library to manage and query data streams in Convex, a backend platform. It covers various techniques to replicate SQL-like operations such as UNION ALL, JOIN, DISTINCT, GROUP BY, and WHERE clauses using TypeScript in Convex. The document introduces the concept of streams, which are async iterables of documents ordered by indexed fields, and explains how to create, merge, and manipulate these streams to achieve complex data querying patterns. It highlights the use of mergedStream to combine data streams, flatMap to expand streams into multiple items, map to modify stream values, and filterWith for advanced filtering with TypeScript predicates. Additionally, the text addresses pagination challenges and solutions, emphasizing the need for stable query definitions and non-reactive contexts to maintain pagination integrity. Overall, the article positions Convex as a comprehensive backend solution with capabilities like cloud functions, a database, and real-time updates to support full-stack AI projects.