GraphQL queries filtering

APIs
1

I’m trying to fetch posts like category->blog_post->post1,post2... , but some category has no post. So I want to skip/filter those categories. How can I do that?

Query:

query MyQuery {
  allContentfulCategory(limit: 10, filter: {}) {
    edges {
      node {
        slug
        name
        blog_post {
          slug
        }
      }
    }
  }
}

I was trying to filter like this: filter: {blog_post: {ne: null}} but it says there’s is no ne property in blog_post instead it has elemMatch property

Screenshot2
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