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 |    66170
       9 |    65179
      11 |    62060
       8 |    58528
      12 |    55898
      13 |    49823
      19 |    46650
       7 |    46437
      18 |    46336
      14 |    45198
      20 |    45193
      17 |    45010
      16 |    43987
      15 |    43930
      21 |    42200
      22 |    38120
       6 |    32971
      23 |    32555
      24 |    26705
      25 |    20985
       5 |    19779
      26 |    16039
      27 |    11601
       4 |     9855
      28 |     8309
      29 |     5542
       3 |     4047
      30 |     3725
      31 |     2317
      32 |     1513
       2 |     1177
      33 |      849
      34 |      483
      35 |      304
       1 |      228
      36 |      120
      37 |       69
      38 |       35
      39 |       24
      40 |       16
      42 |        5
      41 |        5
      45 |        1
      44 |        1
(45 rows)

COMMIT;
COMMIT