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 |    66179
       9 |    65167
      11 |    62019
       8 |    58656
      12 |    55964
      13 |    49828
      19 |    46637
       7 |    46365
      18 |    46363
      20 |    45267
      14 |    45155
      17 |    44939
      16 |    43965
      15 |    43935
      21 |    42102
      22 |    38219
       6 |    32974
      23 |    32538
      24 |    26706
      25 |    21003
       5 |    19714
      26 |    15960
      27 |    11688
       4 |     9887
      28 |     8223
      29 |     5638
       3 |     4045
      30 |     3696
      31 |     2291
      32 |     1505
       2 |     1193
      33 |      864
      34 |      493
      35 |      298
       1 |      227
      36 |      124
      37 |       63
      38 |       38
      39 |       23
      40 |       16
      42 |        5
      41 |        5
      45 |        2
(44 rows)

COMMIT;
COMMIT