text: -- 603	Number of distinct procedure occurrence concepts per person
  
  --HINT DISTRIBUTE_ON_KEY(count_value)
  with rawData(count_value) as
  (
    select COUNT_BIG(distinct po.procedure_concept_id) as count_value
  	from @cdmDatabaseSchema.procedure_occurrence po inner join 
    @cdmDatabaseSchema.observation_period op on po.person_id = op.person_id
    -- only include events that occur during observation period
    where po.procedure_date <= op.observation_period_end_date and
    po.procedure_date >= op.observation_period_start_date
  	group by po.person_id
  ),
  overallStats (avg_value, stdev_value, min_value, max_value, total) as
  (
    select CAST(avg(1.0 * count_value) AS FLOAT) as avg_value,
      CAST(stdev(count_value) AS FLOAT) as stdev_value,
      min(count_value) as min_value,
      max(count_value) as max_value,
      count_big(*) as total
    from rawData
  ),
  statsView (count_value, total, rn) as
  (
    select count_value, 
    	count_big(*) as total, 
  		row_number() over (order by count_value) as rn
    FROM rawData
    group by count_value
  ),
  priorStats (count_value, total, accumulated) as
  (
    select s.count_value, s.total, sum(p.total) as accumulated
    from statsView s
    join statsView p on p.rn <= s.rn
    group by s.count_value, s.total, s.rn
  )
  select 603 as analysis_id,
    floor((count_big(o.total)+99)/100)*100 as count_value,
    o.min_value,
  	o.max_value,
  	o.avg_value,
  	o.stdev_value,
  	MIN(case when p.accumulated >= .50 * o.total then count_value else o.max_value end) as median_value,
  	MIN(case when p.accumulated >= .10 * o.total then count_value else o.max_value end) as p10_value,
  	MIN(case when p.accumulated >= .25 * o.total then count_value else o.max_value end) as p25_value,
  	MIN(case when p.accumulated >= .75 * o.total then count_value else o.max_value end) as p75_value,
  	MIN(case when p.accumulated >= .90 * o.total then count_value else o.max_value end) as p90_value
  into #tempResults_603
  from priorStats p
  CROSS JOIN overallStats o
  GROUP BY o.total, o.min_value, o.max_value, o.avg_value, o.stdev_value
  ;
  
  --HINT DISTRIBUTE_ON_KEY(count_value)
  select analysis_id, 
  cast(null as varchar(255)) as stratum_1, cast(null as varchar(255)) as stratum_2, cast(null as varchar(255)) as stratum_3, cast(null as varchar(255)) as stratum_4, cast(null as varchar(255)) as stratum_5,
  count_value, min_value, max_value, avg_value, stdev_value, median_value, p10_value, p25_value, p75_value, p90_value
  into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_dist_603
  from #tempResults_603
  ;
  
  truncate table #tempResults_603;
  drop table #tempResults_603;
  