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%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 |   500018
      10 |    66069
       9 |    65342
      11 |    62327
       8 |    58302
      12 |    55942
      13 |    49605
      19 |    46675
       7 |    46470
      18 |    46142
      20 |    45381
      14 |    45338
      17 |    45177
      16 |    43825
      15 |    43820
      21 |    42503
      22 |    37805
       6 |    32927
      23 |    32540
      24 |    26695
      25 |    21005
       5 |    19844
      26 |    16012
      27 |    11651
       4 |     9844
      28 |     8186
      29 |     5636
       3 |     4045
      30 |     3767
      31 |     2310
      32 |     1497
       2 |     1169
      33 |      840
      34 |      486
      35 |      281
       1 |      229
      36 |      134
      37 |       72
      38 |       35
      39 |       24
      40 |       16
      41 |        7
      43 |        3
      44 |        2
      45 |        1
      42 |        1
(46 rows)

COMMIT;
COMMIT