мой Postgresql TABLE выглядит, CREATE TABLE foo(man_id, subgroup, power, grp)
AS VALUES
(1, 'Sub_A', 4, 'Group_A'),
(2, 'Sub_B', -1, 'Group_A'),
(3, 'Sub_A', 5, 'Group_A'),
(4, 'Sub_B', 1, 'Group_A'),
(5, 'Sub_B', 6, 'Group_B'),
(6, 'Sub_B', 2, 'Group_B'),
(7, 'Sub_...
01 июль 2018, в 04:14