Unless you´re not using a group by (very CPU and memory intensive) that change won´t change RAM consumption.
You should check your data and maybe do some optimizations:
1) Break a datetime field into a date field and time field
2) Round some decimal values
this will give QlikView more chance to optimize your data.
At last resource, increase RAM
I had before a String as a composite key:
Key1&_&Key2 as Masterkey
but then changed it to Key1*100000+Key2 as Masterkey
Couldnt use AutoNumber() as Masterkey - as I need the MasterKey for an incr. load.
I do not have any more ideas
Key1*100000+Key2 as Masterkey, >num
From some.qvd (qvd);