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 |    66147
       9 |    65181
      11 |    62327
       8 |    58405
      12 |    55565
      13 |    49971
      19 |    46644
      18 |    46305
       7 |    46230
      14 |    45399
      20 |    45238
      17 |    44992
      16 |    43880
      15 |    43553
      21 |    42349
      22 |    38154
       6 |    32805
      23 |    32480
      24 |    26808
      25 |    21282
       5 |    19614
      26 |    16083
      27 |    11811
       4 |     9874
      28 |     8253
      29 |     5678
       3 |     3990
      30 |     3730
      31 |     2328
      32 |     1485
       2 |     1197
      33 |      874
      34 |      504
      35 |      312
       1 |      233
      36 |      133
      37 |       72
      38 |       48
      39 |       18
      40 |       13
      42 |        5
      41 |        3
      45 |        2
      43 |        2
      44 |        1
(46 rows)

COMMIT;
COMMIT