pk1,pk2,content,sortable,sortable_with_nulls,sortable_with_nulls_2,text
a,r,a-r,60,0.6389494948660052,,$null
f,d,f-d,60,,0.4408231901628116,$blah
g,v,g-v,60,0.3161388944905802,0.44220806383628486,$null