To print the result you can create a POJO class matching your projected fields and use it on line 38 instead of String.class.
For example: Table result1 = tableA.select("content, content.hashCode() as h1, hashCode(content) as h2"); tableEnv.toDataSet(result1, HashCodeSelect.class).print(); public static class HashCodeSelect { public String content; public int h1; public int h2; // toString } Regards, Roman On Sun, Oct 18, 2020 at 5:36 AM 大森林 <appleyu...@foxmail.com> wrote: > I'm learning official document > But the example is not complete. > > The code is: > https://paste.ubuntu.com/p/Mx96MWjQ83/ > > Could you tell me > how to print result1 > in above code? > (The above code is wrong) > > > Thanks for your help. >