Thanks for sharing query here. Are you getting result if you run above query in query generator?
Please check SAP notes:
1732391 - Alert not fired when attached query contains a Null first
column
1951520 - Alert is not triggered if it is based on query which
includes comments such as "/*...--...*/"https://websmp130.sap-ag.de/sap(bD1lbiZjPTAwMQ==)/bc/bsp/sno/ui_entry/entry.htm?param=69765F6D6F64653D3030312669765F7361706E6F7465735F6E756D6265723D3139353135323026