pk1,pk2,content,sortable,sortable_with_nulls,sortable_with_nulls_2,text
h,m,h-m,-59,,0.8730019200593472,$blah
h,n,h-n,41,0.7114009771190007,,$blah
h,o,h-o,15,0.9053062089782412,0.09171356965909339,$blah
h,p,h-p,-94,0.4148969058190054,0.23577807386343264,$null
h,q,h-q,-93,0.099083124393048,,$null
h,r,h-r,-27,,0.4691101271554937,$null
h,s,h-s,-80,,0.7272347853249318,$blah