SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function sum (children 1)
     ExpressionList (children 1)
      Function multiIf (children 1)
       ExpressionList (children 3)
        Function isNull (children 1)
         ExpressionList (children 1)
          Identifier id
        Literal UInt64_1
        Literal UInt64_0
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t_subcolumns_if
   Set
