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 |    66187
       9 |    65041
      11 |    62226
       8 |    58429
      12 |    55638
      13 |    49996
      19 |    46554
       7 |    46386
      18 |    46203
      20 |    45344
      14 |    45269
      17 |    44892
      15 |    43863
      16 |    43771
      21 |    42199
      22 |    38409
       6 |    32845
      23 |    32632
      24 |    26794
      25 |    21309
       5 |    19498
      26 |    15872
      27 |    11780
       4 |     9935
      28 |     8269
      29 |     5662
       3 |     3991
      30 |     3720
      31 |     2356
      32 |     1531
       2 |     1181
      33 |      875
      34 |      509
      35 |      286
       1 |      232
      36 |      138
      37 |       70
      38 |       36
      39 |       27
      40 |       10
      41 |        8
      42 |        4
      45 |        2
(44 rows)

COMMIT;
COMMIT