SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Function if (children 1)
       ExpressionList (children 3)
        Literal UInt64_0
        Function toTime64 (children 1)
         ExpressionList (children 2)
          Literal \'00:00:00\'
          Literal UInt64_3
        Function toTime64 (children 1)
         ExpressionList (children 2)
          Literal \'00:00:00\'
          Literal UInt64_6
