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 |    66147
       9 |    65110
      11 |    62056
       8 |    58367
      12 |    55914
      13 |    49858
      19 |    46703
       7 |    46328
      18 |    46297
      20 |    45221
      14 |    45184
      17 |    44866
      16 |    43970
      15 |    43835
      21 |    42202
      22 |    38213
       6 |    32864
      23 |    32719
      24 |    26755
      25 |    21123
       5 |    19672
      26 |    16140
      27 |    11688
       4 |     9796
      28 |     8364
      29 |     5600
       3 |     4021
      30 |     3754
      31 |     2340
      32 |     1537
       2 |     1165
      33 |      866
      34 |      485
      35 |      311
       1 |      227
      36 |      122
      37 |       69
      38 |       38
      39 |       21
      40 |       19
      42 |        5
      41 |        5
      45 |        1
      44 |        1
(45 rows)

COMMIT;
COMMIT