SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 5)
    Identifier id
    Identifier t.a
    Identifier t.b
    Identifier arr.size0
    Identifier arr.null
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t_missed_subcolumns
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier id
