All Modifiers Combined

{
  allMarkdownRemark(
    limit: 3
    filter: { frontmatter: { date: { ne: null } } }
    sort: { fields: [frontmatter___date], order: DESC }
  ) {
    edges {
      node {
        frontmatter {
          title
          date(formatString: "dddd DD MMMM YYYY")
        }
      }
    }
  }
}

This query combines sorting, filtering, limiting and formatting together.