set expression in aggregation function

[fangzheng]

Hi 

Anyone know the the difference between below two expression:

I was using the second one because just aware of the identifier today, but not sure what is the default identifier if the user does not specify any

Count({$<Year={2009}>} distinct customer)

Count({<Year={2009}>} distinct customer)

[NageshSG]

Hi @fangzheng 

When identifier is not specified in set statement it is defaulted to $.

In the example you have given, both the expressions are treated alike. Hope this helps.