SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 5)
   ExpressionList (children 3)
    Identifier fact_3_id
    Identifier fact_4_id
    Function count (children 1)
     ExpressionList
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier grouping_sets
   ExpressionList (children 1)
    ExpressionList (children 2)
     Identifier fact_3_id
     Identifier fact_4_id
   ExpressionList (children 2)
    OrderByElement (children 1)
     Identifier fact_3_id
    OrderByElement (children 1)
     Identifier fact_4_id
   Set