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 |   500020
      10 |    66197
       9 |    65218
      11 |    62065
       8 |    58140
      12 |    55650
      13 |    50197
      18 |    46564
       7 |    46519
      19 |    46257
      20 |    45447
      14 |    45148
      17 |    44816
      16 |    43903
      15 |    43678
      21 |    42391
      22 |    38138
       6 |    32783
      23 |    32687
      24 |    26738
      25 |    21264
       5 |    19578
      26 |    16013
      27 |    11839
       4 |     9917
      28 |     8173
      29 |     5680
       3 |     3988
      30 |     3802
      31 |     2319
      32 |     1467
       2 |     1200
      33 |      887
      34 |      522
      35 |      260
       1 |      227
      36 |      138
      37 |       75
      38 |       49
      39 |       19
      40 |       12
      41 |        8
      42 |        3
      45 |        2
      44 |        1
      43 |        1
(46 rows)

COMMIT;
COMMIT