Will this work to avoid Auto-Exist . . ?

Anonymous , Not very clear. We should prefer star schmea, but it will work without that too. Not sure what do you mean by Auto-Exist.

An example where the star schema plays a role. Say I want to ignore filter on date, but do not want other filters to get impacted , then we can use all on date table

It also help to force row context after using all or allselected

This Period = CALCULATE(sum('Table'[Qty]), FILTER(ALL(Period),Period[Period Rank]=max(Period[Period Rank])))

In the above case, you do need to worry about other dimensions, you will get the current period for all dimensions correctly.

If I use it in a single table I have to add condition to handle all other parameters

Can explain with example what is the issue