hpcc-systems/HPCC-Platform — Issue #758: SIZEOF(Dataset)
Author: dabayliss
Created: 2011-10-20 19:16:04+00:00
State: open

For a variable length record the system will not return sizeof - it can return sizeof,max - but that is way too pessimistic. The question as to whether or not a dataset will 'fit on a node' is crucial to algorithm selection - we need some kind of syntax for SIZEOF(dataset,jollywellcomputeitifyouhaveto) - note - we almost always multiply by COUNT(Dataset) - we really want to know - "Can i put this in a lookup join" or similar.