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%accounts%'
		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 |   500019
      10 |    65769
       9 |    65223
      11 |    62498
       8 |    58152
      12 |    55775
      13 |    49917
       7 |    46563
      19 |    46548
      18 |    45998
      20 |    45481
      14 |    45391
      17 |    45138
      16 |    43711
      15 |    43604
      21 |    42614
      22 |    37982
       6 |    32841
      23 |    32680
      24 |    26758
      25 |    21250
       5 |    19520
      26 |    16078
      27 |    11670
       4 |     9954
      28 |     8174
      29 |     5754
       3 |     3951
      30 |     3761
      31 |     2337
      32 |     1513
       2 |     1184
      33 |      882
      34 |      493
      35 |      266
       1 |      234
      36 |      143
      37 |       88
      38 |       37
      39 |       21
      40 |       15
      41 |        5
      42 |        3
      43 |        2
      46 |        1
      45 |        1
      44 |        1
(47 rows)

COMMIT;
COMMIT