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 '%unusual%accounts%'
		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 |   500022
      10 |    66014
       9 |    65269
      11 |    62264
       8 |    58237
      12 |    55882
      13 |    49789
      18 |    46547
      19 |    46534
       7 |    46306
      20 |    45347
      14 |    45283
      17 |    44949
      16 |    43934
      15 |    43581
      21 |    42297
      22 |    37956
       6 |    32882
      23 |    32636
      24 |    26842
      25 |    21183
       5 |    19675
      26 |    16088
      27 |    11791
       4 |     9774
      28 |     8310
      29 |     5643
       3 |     4031
      30 |     3693
      31 |     2385
      32 |     1486
       2 |     1177
      33 |      864
      34 |      513
      35 |      294
       1 |      224
      36 |      140
      37 |       65
      38 |       43
      39 |       23
      40 |       12
      41 |        7
      42 |        3
      44 |        2
      43 |        2
      45 |        1
(46 rows)

COMMIT;
COMMIT