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 |    66192
       9 |    65089
      11 |    62055
       8 |    58488
      12 |    56010
      13 |    49694
      19 |    46647
      18 |    46248
       7 |    46237
      20 |    45254
      14 |    45204
      17 |    44975
      16 |    43916
      15 |    43854
      21 |    42224
      22 |    38218
       6 |    32844
      23 |    32705
      24 |    26784
      25 |    21105
       5 |    19657
      26 |    16113
      27 |    11698
       4 |     9801
      28 |     8380
      29 |     5623
       3 |     4017
      30 |     3752
      31 |     2318
      32 |     1519
       2 |     1175
      33 |      875
      34 |      492
      35 |      307
       1 |      227
      36 |      127
      37 |       66
      38 |       37
      39 |       24
      40 |       16
      41 |        5
      42 |        4
      45 |        1
      44 |        1
      43 |        1
(46 rows)

COMMIT;
COMMIT