hge-blog-update-article.graphql

mutation update_title_content {
  update_article(
    where: {id: {_eq: 1}},
    _set: {
      title: "John's new first post title",
      content: "New content for John's first post"
    }
  ) {
    affected_rows
    returning {
      id
      title
      content
    }
  }
}