title: Apollo/GraphQL: Field Type to Use for Timestamp?
body: <p>I'm storing a value to a postgres field that is of type <code>timestamp with time zone</code>. I was defining the field as an int in my Apollo schema, but I'm getting this error message in the resolver:</p>
  
  <blockquote>
    <p>column "apptDateTime" is of type timestamp with time zone but expression is of type integer</p>
  </blockquote>
  
  <p>Looking up <a href="http://graphql.org/graphql-js/type/" rel="nofollow noreferrer">GraphQL data types</a>, I don't yet see any type that is cited as corresponding to a field of type timestamp. </p>
  
  <p>What's the correct field type to use in the Apollo schema for a field that is of type timestamp in the database?</p>