pk1,pk2,content,sortable,sortable_with_nulls,sortable_with_nulls_2,text
g,h,g-h,44,0.06958542124833644,0.03065709838090591,$null
d,c,d-c,44,0.7826353463610196,0.06895673651964052,$blah
d,r,d-r,44,,0.7644434453261942,$null
f,b,f-b,44,,0.9106169537187105,$null