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 |   500018
      10 |    65885
       9 |    65302
      11 |    62426
       8 |    58253
      12 |    55880
      13 |    49789
      19 |    46597
       7 |    46297
      18 |    46144
      20 |    45474
      14 |    45349
      17 |    45041
      16 |    43776
      15 |    43676
      21 |    42468
      22 |    37956
       6 |    32825
      23 |    32560
      24 |    26867
      25 |    21118
       5 |    19680
      26 |    16123
      27 |    11736
       4 |     9829
      28 |     8221
      29 |     5712
       3 |     4008
      30 |     3810
      31 |     2323
      32 |     1507
       2 |     1168
      33 |      878
      34 |      498
      35 |      270
       1 |      227
      36 |      146
      37 |       74
      38 |       32
      39 |       27
      40 |       16
      41 |        7
      45 |        2
      43 |        2
      42 |        2
      44 |        1
(46 rows)

COMMIT;
COMMIT