Example queries

List classes with instance counts and total sizes:

select
    count,
    count * 1.0 / (select sum(count) from ez_total) count_frac,
    size,
    size * 1.0 / (select sum(size) from ez_total) size_frac,
    name
from ez_total
order by size desc
;

List all class instance field names:

select c.name class, fn.text field, t.name type
from field f
join ez_class c on f.class_id = c.id
join name fn on f.name_id = fn.id
join type t on f.type_id = t.id
order by c.name, fn.text
;

List fields referencing instances of particular class (replacing 'class/name/Here' with the class of interest):

select count(*) count, oc.name class, fn.text field from ez_class c
join instance i on c.id = i.class_id
join field_value v on i.id = v.obj_id
join field f on v.field_id = f.id
join name fn on f.name_id = fn.id
join ez_class oc on v.class_id = oc.id
where c.name like 'class/name/Here'
group by oc.name, fn.text
order by count(*) desc
;