SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function in (children 1)
     ExpressionList (children 2)
      Function tuple (children 1)
       ExpressionList (children 1)
        Function map (children 1)
         ExpressionList (children 2)
          Literal UInt64_42
          Function CAST (children 1)
           ExpressionList (children 2)
            Function materialize (children 1)
             ExpressionList (children 1)
              Literal \'{}\'
            Literal \'JSON\'
      Function tuple (children 1)
       ExpressionList (children 1)
        Function map (children 1)
         ExpressionList (children 2)
          Literal UInt64_42
          Literal \'{}\'
