SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function toStartOfInterval (children 1)
     ExpressionList (children 3)
      Function toDateTime64 (children 1)
       ExpressionList (children 2)
        Literal \'2023-10-09 10:11:12.987\'
        Literal UInt64_3
      Function toIntervalMicrosecond (children 1)
       ExpressionList (children 1)
        Literal UInt64_1
      Function toDateTime64 (children 1)
       ExpressionList (children 2)
        Literal \'2023-10-09 10:11:12.123\'
        Literal UInt64_3
