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%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 |   500016
      10 |    66359
       9 |    65059
      11 |    62242
       8 |    58643
      12 |    55534
      13 |    49898
      19 |    46836
       7 |    46387
      18 |    46242
      14 |    45452
      20 |    45149
      17 |    45060
      16 |    43851
      15 |    43630
      21 |    42360
      22 |    37930
       6 |    32815
      23 |    32573
      24 |    26738
      25 |    21245
       5 |    19746
      26 |    15869
      27 |    11707
       4 |    10025
      28 |     8081
      29 |     5599
       3 |     4000
      30 |     3784
      31 |     2295
      32 |     1514
       2 |     1198
      33 |      850
      34 |      507
      35 |      267
       1 |      234
      36 |      143
      37 |       77
      38 |       34
      39 |       27
      40 |       10
      41 |        7
      42 |        4
      45 |        1
      44 |        1
      43 |        1
(46 rows)

COMMIT;
COMMIT