BEGIN;
BEGIN
select
	c_count,
	count(*) as custdist
from
	(
		select
			c_custkey,
			count(o_orderkey)
		from
			customer left outer join orders on
				c_custkey = o_custkey
				and o_comment not like '%special%requests%'
		group by
			c_custkey
	) as c_orders (c_custkey, c_count)
group by
	c_count
order by
	custdist desc,
	c_count desc;
 c_count | custdist 
---------+----------
       0 |   500019
      10 |    66241
       9 |    65218
      11 |    62131
       8 |    58495
      12 |    55808
      13 |    49759
      19 |    46710
       7 |    46565
      18 |    46293
      14 |    45254
      17 |    45110
      20 |    45107
      16 |    44061
      15 |    43749
      21 |    42205
      22 |    38013
       6 |    32787
      23 |    32539
      24 |    26784
      25 |    20998
       5 |    19812
      26 |    15979
      27 |    11742
       4 |     9902
      28 |     8152
      29 |     5652
       3 |     4066
      30 |     3670
      31 |     2312
      32 |     1526
       2 |     1190
      33 |      863
      34 |      493
      35 |      256
       1 |      230
      36 |      142
      37 |       77
      38 |       48
      39 |       18
      40 |       12
      42 |        5
      41 |        3
      44 |        2
      45 |        1
      43 |        1
(46 rows)

COMMIT;
COMMIT