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 |    66097
       9 |    65121
      11 |    62102
       8 |    58333
      12 |    55971
      13 |    49868
      19 |    46675
      18 |    46403
       7 |    46363
      20 |    45239
      14 |    45099
      17 |    44840
      15 |    43910
      16 |    43897
      21 |    42113
      22 |    38206
       6 |    32840
      23 |    32772
      24 |    26754
      25 |    21121
       5 |    19681
      26 |    16128
      27 |    11681
       4 |     9782
      28 |     8377
      29 |     5620
       3 |     4036
      30 |     3745
      31 |     2360
      32 |     1515
       2 |     1162
      33 |      853
      34 |      495
      35 |      308
       1 |      227
      36 |      130
      37 |       63
      38 |       39
      39 |       23
      40 |       18
      41 |        5
      42 |        4
      45 |        1
      44 |        1
      43 |        1
(46 rows)

COMMIT;
COMMIT