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 |    66305
       9 |    65032
      11 |    62174
       8 |    58402
      12 |    55775
      13 |    49841
      19 |    46683
      18 |    46321
       7 |    46304
      20 |    45316
      14 |    45281
      17 |    45088
      16 |    43776
      15 |    43654
      21 |    42306
      22 |    37957
       6 |    32728
      23 |    32669
      24 |    26907
      25 |    21243
       5 |    19707
      26 |    16039
      27 |    11758
       4 |     9856
      28 |     8205
      29 |     5633
       3 |     3997
      30 |     3798
      31 |     2369
      32 |     1508
       2 |     1175
      33 |      871
      34 |      496
      35 |      288
       1 |      227
      36 |      131
      37 |       76
      38 |       35
      39 |       28
      40 |       12
      42 |        6
      41 |        5
      45 |        1
      44 |        1
(45 rows)

COMMIT;
COMMIT