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%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 |   500018
      10 |    66278
       9 |    65207
      11 |    62024
       8 |    58169
      12 |    55699
      13 |    50123
      18 |    46529
       7 |    46438
      19 |    46418
      20 |    45329
      14 |    45236
      17 |    44749
      16 |    43877
      15 |    43645
      21 |    42435
      22 |    38135
       6 |    32811
      23 |    32651
      24 |    26829
      25 |    21234
       5 |    19556
      26 |    15943
      27 |    11853
       4 |     9963
      28 |     8197
      29 |     5689
       3 |     3973
      30 |     3775
      31 |     2339
      32 |     1487
       2 |     1196
      33 |      885
      34 |      507
      35 |      268
       1 |      229
      36 |      138
      37 |       74
      38 |       48
      39 |       19
      40 |       12
      41 |        7
      42 |        4
      44 |        2
      45 |        1
      43 |        1
(46 rows)

COMMIT;
COMMIT