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 |    66281
       9 |    65280
      11 |    62035
       8 |    58175
      12 |    55935
      13 |    49823
      18 |    46594
      19 |    46296
       7 |    46279
      20 |    45502
      14 |    45183
      17 |    44857
      16 |    44084
      15 |    43591
      21 |    42386
      22 |    37814
       6 |    32801
      23 |    32744
      24 |    26849
      25 |    21105
       5 |    19720
      26 |    16111
      27 |    11772
       4 |     9828
      28 |     8291
      29 |     5691
       3 |     4031
      30 |     3748
      31 |     2372
      32 |     1463
       2 |     1164
      33 |      881
      34 |      491
      35 |      282
       1 |      226
      36 |      134
      37 |       69
      38 |       43
      39 |       22
      40 |       15
      41 |        5
      42 |        4
      44 |        3
      43 |        2
(45 rows)

COMMIT;
COMMIT