Equivalent of timeshift operator in Azure Log Analytics (KQL)

Thanks ! This is good but how will it work when we try to set up alert using the Log Alert .
This will work fine when I run it in Log Analytics using 'Set In Query' option for timeRange. But when I try to set up an alert with this it has to have the period which is a multiple of minutes ( max upto equivalent of 2 days) . When I set that the Timegenerated section of the query is overridden by the one selected in Period and expected results are not returned . Is there a way to get around this ?

Thanks