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 |    66191
       9 |    65166
      11 |    62202
       8 |    58367
      12 |    55731
      13 |    49782
      19 |    46651
       7 |    46433
      18 |    46254
      14 |    45286
      20 |    45134
      17 |    45031
      16 |    43998
      15 |    43698
      21 |    42281
      22 |    38069
      23 |    32676
       6 |    32656
      24 |    26898
      25 |    21103
       5 |    19715
      26 |    16054
      27 |    11859
       4 |     9844
      28 |     8192
      29 |     5728
       3 |     4035
      30 |     3711
      31 |     2337
      32 |     1537
       2 |     1181
      33 |      877
      34 |      492
      35 |      269
       1 |      230
      36 |      144
      37 |       78
      38 |       48
      39 |       19
      40 |       12
      42 |        6
      44 |        2
      41 |        2
      45 |        1
      43 |        1
(46 rows)

COMMIT;
COMMIT