pk1,pk2,content,sortable,sortable_with_nulls,sortable_with_nulls_2,text
c,v,c-v,16,0.32684580488130854,0.278256615638806,$blah
f,v,f-v,17,0.6433406842054887,,$blah
a,v,a-v,38,0.6898676320996214,0.9951493566608947,$blah
g,v,g-v,60,0.3161388944905802,0.44220806383628486,$null
d,v,d-v,76,,0.2881048895936893,$null