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 |    66178
       9 |    65348
      11 |    62016
       8 |    58087
      12 |    55938
      13 |    49896
      18 |    46589
      19 |    46334
       7 |    46312
      20 |    45491
      14 |    45165
      17 |    44852
      16 |    44070
      15 |    43619
      21 |    42298
      22 |    37899
       6 |    32859
      23 |    32631
      24 |    26952
      25 |    21079
       5 |    19728
      26 |    16129
      27 |    11788
       4 |     9822
      28 |     8250
      29 |     5694
       3 |     4026
      30 |     3727
      31 |     2410
      32 |     1462
       2 |     1158
      33 |      892
      34 |      479
      35 |      276
       1 |      226
      36 |      137
      37 |       74
      38 |       39
      39 |       21
      40 |       15
      41 |        7
      42 |        5
      44 |        3
      43 |        1
(45 rows)

COMMIT;
COMMIT