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 '%unusual%accounts%'
		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 |   500022
      10 |    66126
       9 |    65202
      11 |    62238
       8 |    58290
      12 |    55834
      13 |    49766
      18 |    46556
      19 |    46474
       7 |    46296
      20 |    45396
      14 |    45319
      17 |    44987
      16 |    43864
      15 |    43621
      21 |    42308
      22 |    37971
       6 |    32859
      23 |    32625
      24 |    26782
      25 |    21231
       5 |    19669
      26 |    16070
      27 |    11780
       4 |     9778
      28 |     8341
      29 |     5634
       3 |     4029
      30 |     3692
      31 |     2398
      32 |     1464
       2 |     1177
      33 |      871
      34 |      512
      35 |      299
       1 |      225
      36 |      135
      37 |       65
      38 |       45
      39 |       24
      40 |       11
      41 |        6
      43 |        3
      44 |        2
      42 |        2
      45 |        1
(46 rows)

COMMIT;
COMMIT