SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function arrayReduce (children 1)
     ExpressionList (children 2)
      Literal \'uniqStateForEach\'
      Literal Array_[Array_[UInt64_1], Array_[UInt64_2]]
