aggr function

[nagasekhar]

can we use aggr function in back end

can you mention some important  functions which can be used only in front end only

[Or]

You can't use aggr() in script, but typically you can achieve the same result using GROUP BY / Where / If statements in a load statement. See e.g. https://community.qlik.com/t5/New-to-Qlik-Sense/Equivalent-for-AGGR-in-script/td-p/1409568