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 '%express%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 |   500021
      10 |    66153
       9 |    65164
      11 |    62137
       8 |    58429
      12 |    55933
      13 |    49840
      19 |    46727
       7 |    46493
      18 |    46474
      20 |    45220
      14 |    45117
      17 |    44870
      15 |    43977
      16 |    43954
      21 |    42043
      22 |    38135
       6 |    32998
      23 |    32665
      24 |    26605
      25 |    21027
       5 |    19779
      26 |    16026
      27 |    11576
       4 |     9833
      28 |     8320
      29 |     5598
       3 |     4054
      30 |     3680
      31 |     2350
      32 |     1480
       2 |     1173
      33 |      846
      34 |      486
      35 |      306
       1 |      232
      36 |      125
      37 |       64
      38 |       37
      39 |       23
      40 |       18
      41 |        5
      42 |        4
      45 |        1
      44 |        1
      43 |        1
(46 rows)

COMMIT;
COMMIT