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 |    66292
       9 |    65242
      11 |    62099
       8 |    58230
      12 |    55700
      13 |    49909
      18 |    46444
      19 |    46393
       7 |    46308
      20 |    45427
      14 |    45383
      17 |    44819
      16 |    43952
      15 |    43608
      21 |    42384
      22 |    37959
       6 |    32742
      23 |    32661
      24 |    26839
      25 |    21323
       5 |    19684
      26 |    15923
      27 |    11841
       4 |     9924
      28 |     8227
      29 |     5690
       3 |     3989
      30 |     3792
      31 |     2325
      32 |     1493
       2 |     1185
      33 |      887
      34 |      493
      35 |      283
       1 |      232
      36 |      132
      37 |       77
      38 |       40
      39 |       24
      40 |       10
      41 |        8
      42 |        5
      44 |        2
      45 |        1
      43 |        1
(46 rows)

COMMIT;
COMMIT