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%packages%'
		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 |    66013
       9 |    65192
      11 |    62152
       8 |    58216
      12 |    55886
      13 |    49899
      19 |    46835
       7 |    46511
      18 |    46279
      14 |    45498
      20 |    45130
      17 |    44725
      16 |    43727
      15 |    43574
      21 |    42489
      22 |    38136
       6 |    32876
      23 |    32730
      24 |    26802
      25 |    21205
       5 |    19466
      26 |    16069
      27 |    11663
       4 |     9967
      28 |     8279
      29 |     5655
       3 |     3989
      30 |     3759
      31 |     2388
      32 |     1512
       2 |     1186
      33 |      854
      34 |      499
      35 |      296
       1 |      220
      36 |      135
      37 |       74
      38 |       48
      39 |       21
      40 |       10
      41 |        7
      42 |        4
      44 |        2
      45 |        1
      43 |        1
(46 rows)

COMMIT;
COMMIT