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 |    66156
       9 |    65191
      11 |    62144
       8 |    58586
      12 |    55807
      13 |    49872
      19 |    46671
       7 |    46417
      18 |    46336
      14 |    45217
      20 |    45192
      17 |    44897
      16 |    43978
      15 |    43910
      21 |    42096
      22 |    38408
       6 |    32944
      23 |    32411
      24 |    26669
      25 |    21097
       5 |    19706
      26 |    15945
      27 |    11672
       4 |     9925
      28 |     8224
      29 |     5618
       3 |     4031
      30 |     3698
      31 |     2291
      32 |     1502
       2 |     1195
      33 |      872
      34 |      503
      35 |      284
       1 |      230
      36 |      127
      37 |       68
      38 |       38
      39 |       25
      40 |       13
      41 |        6
      42 |        5
      45 |        2
(44 rows)

COMMIT;
COMMIT