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 |    66218
       9 |    65293
      11 |    62226
       8 |    58400
      12 |    55805
      13 |    49706
      18 |    46553
      19 |    46503
       7 |    46403
      20 |    45405
      14 |    45349
      17 |    45040
      16 |    43970
      15 |    43651
      21 |    42268
      22 |    37900
       6 |    32983
      23 |    32490
      24 |    26664
      25 |    21138
       5 |    19761
      26 |    15971
      27 |    11686
       4 |     9850
      28 |     8286
      29 |     5573
       3 |     4050
      30 |     3669
      31 |     2343
      32 |     1460
       2 |     1190
      33 |      857
      34 |      500
      35 |      305
       1 |      229
      36 |      124
      37 |       68
      38 |       43
      39 |       23
      40 |       11
      41 |        6
      43 |        3
      44 |        2
      42 |        2
      45 |        1
(46 rows)

COMMIT;
COMMIT