pk1,pk2,content,sortable,sortable_with_nulls,sortable_with_nulls_2,text
e,r,e-r,20,0.2650227795434089,0.692704598586882,$blah
f,r,f-r,52,,,$null
g,r,g-r,50,0.4004498163160871,,$null
h,r,h-r,-27,,0.4691101271554937,$null