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 |    66329
       9 |    65312
      11 |    62094
       8 |    58302
      12 |    55683
      13 |    49925
      19 |    46506
      18 |    46479
       7 |    46477
      14 |    45406
      20 |    45335
      17 |    44873
      16 |    44046
      15 |    43621
      21 |    42318
      22 |    37851
       6 |    32889
      23 |    32606
      24 |    26665
      25 |    21251
       5 |    19747
      26 |    15838
      27 |    11737
       4 |     9987
      28 |     8166
      29 |     5619
       3 |     4018
      30 |     3753
      31 |     2312
      32 |     1467
       2 |     1192
      33 |      885
      34 |      484
      35 |      276
       1 |      237
      36 |      134
      37 |       72
      38 |       40
      39 |       23
      40 |       11
      41 |        7
      42 |        5
      44 |        2
      45 |        1
      43 |        1
(46 rows)

COMMIT;
COMMIT