Contents

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title: Unions
---

# Unions

A union is a type of object that can represent one of many kinds of objects. For example, a field marked as a `ReactableUnion` could be a `CommitComment`, an `Issue`, an `IssueComment`, or a `PullRequestReviewComment`, because each of those objects can be reacted on.

For more information, see [the GraphQL spec](http://spec.graphql.org/draft/#sec-Unions).

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
graphql-docs-5.1.0	lib/graphql-docs/landing_pages/union.md
graphql-docs-5.0.0	lib/graphql-docs/landing_pages/union.md