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 '%special%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 |   500016
      10 |    66222
       9 |    65094
      11 |    62240
       8 |    58302
      12 |    55806
      13 |    49892
      19 |    46593
      18 |    46496
       7 |    46321
      20 |    45437
      14 |    45169
      17 |    44936
      16 |    43803
      15 |    43725
      21 |    42050
      22 |    38107
       6 |    32747
      23 |    32609
      24 |    26965
      25 |    21255
       5 |    19712
      26 |    16045
      27 |    11676
       4 |     9847
      28 |     8267
      29 |     5642
       3 |     4015
      30 |     3799
      31 |     2349
      32 |     1529
       2 |     1169
      33 |      851
      34 |      497
      35 |      295
       1 |      228
      36 |      130
      37 |       75
      38 |       35
      39 |       28
      40 |       12
      41 |        7
      42 |        5
      45 |        2
(44 rows)

COMMIT;
COMMIT