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 |    66262
       9 |    65288
      11 |    62026
       8 |    58163
      12 |    55866
      13 |    49887
      18 |    46607
      19 |    46303
       7 |    46274
      20 |    45456
      14 |    45188
      17 |    44885
      16 |    44001
      15 |    43653
      21 |    42411
      22 |    37814
       6 |    32860
      23 |    32741
      24 |    26864
      25 |    21078
       5 |    19704
      26 |    16124
      27 |    11776
       4 |     9823
      28 |     8273
      29 |     5688
       3 |     4030
      30 |     3747
      31 |     2403
      32 |     1455
       2 |     1161
      33 |      883
      34 |      481
      35 |      281
       1 |      225
      36 |      138
      37 |       72
      38 |       39
      39 |       22
      40 |       16
      41 |        5
      42 |        4
      44 |        3
      43 |        2
(45 rows)

COMMIT;
COMMIT