The error of polling notifications

I have coded a Adapter notification base on a database table named ‘TEMPNOTIFICATION’,and it have select all of columns of this table,but It raised the followed error when I configure the polling notifications:
[ART.116.3038] Adapter Runtime (Notification): Error in Notification Callback:enableCallback notification test:testNotification.
[ADA.1.309] Select at least one column from the main table.

the attachment is the code that developed by me,perhaps it will help you to trail the error.

the code (9.9 k)

If any advice /help?

Best regards