yes, the sql works fine now. There was a typo in the value assigned to the column name '@timestamp_column'. great work.

Thanks for your reply. when i ran this query by setting a new value to @last_updated_min, i didn't get any results back and no error message showed up. The print...

should be bidirectional. Any backup & restore script for both Full DB backup & Diff backup? I think, Diff backup should be done after the full backup. Is that correct?...