fixed SUM to test for null, rather than 0 rows
fixed SUM to test for null, rather than 0 rows

parkouss/treeherder,moijes12/treeherder,akhileshpillai/treeherder,avih/treeherder,tojon/treeherder,tojonmz/treeherder,tojonmz/treeherder,akhileshpillai/treeherder,vaishalitekale/treeherder,KWierso/treeherder,gbrmachado/treeherder,deathping1994/treeherder,jgraham/treeherder,moijes12/treeherder,edmorley/treeherder,moijes12/treeherder,rail/treeherder,tojon/treeherder,vaishalitekale/treeherder,vaishalitekale/treeherder,deathping1994/treeherder,glenn124f/treeherder,edmorley/treeherder,akhileshpillai/treeherder,avih/treeherder,tojonmz/treeherder,wlach/treeherder,moijes12/treeherder,gbrmachado/treeherder,sylvestre/treeherder,glenn124f/treeherder,sylvestre/treeherder,kapy2010/treeherder,gbrmachado/treeherder,avih/treeherder,akhileshpillai/treeherder,jgraham/treeherder,avih/treeherder,rail/treeherder,KWierso/treeherder,adusca/treeherder,avih/treeherder,tojonmz/treeherder,jgraham/treeherder,tojonmz/treeherder,jgraham/treeherder,deathping1994/treeherder,kapy2010/treeherder,vaishalitekale/treeherder,edmorley/treeherder,gbrmachado/treeherder,glenn124f/treeherder,adusca/treeherder,tojon/treeherder,wlach/treeherder,glenn124f/treeherder,avih/treeherder,deathping1994/treeherder,kapy2010/treeherder,kapy2010/treeherder,tojonmz/treeherder,parkouss/treeherder,moijes12/treeherder,glenn124f/treeherder,parkouss/treeherder,parkouss/treeherder,sylvestre/treeherder,wlach/treeherder,wlach/treeherder,vaishalitekale/treeherder,wlach/treeherder,gbrmachado/treeherder,akhileshpillai/treeherder,akhileshpillai/treeherder,KWierso/treeherder,gbrmachado/treeherder,adusca/treeherder,edmorley/treeherder,moijes12/treeherder,vaishalitekale/treeherder,tojon/treeherder,sylvestre/treeherder,jgraham/treeherder,rail/treeherder,adusca/treeherder,adusca/treeherder,wlach/treeherder,parkouss/treeherder,adusca/treeherder,kapy2010/treeherder,sylvestre/treeherder,rail/treeherder,KWierso/treeherder,parkouss/treeherder,jgraham/treeherder,glenn124f/treeherder,deathping1994/treeherder,deathping1994/treeherder,rail/treeherder,rail/treeherder,sylvestre/treeherder