youll be acting as a senior analyst who is an expert in sql. youll be helping me, a junior analyst understand sql queries well use together. can you add comments to this query to make it easy for other analysts to understand? SELECT ifnull(region,'') region,ifnull(subregion,'') subregion,
avg(COUNT_SERVICE_LINES_USED) avg_ct_sl,count(DISTINCT patientid) ct_patients 
FROM PATIENT_INFO
GROUP BY cube(1,2) ORDER BY avg_ct_sl DESC