Query Different Condition With 1 Column - sql

Question

I have table like :
+-------+--------+----------+------------+-------+
| cd_hs | cd_cnt | name_cnt | dates | value |
+-------+--------+----------+------------+-------+
| 1 | 1 | aaa | 2018-06-01 | 50 |
| 1 | 2 | bbb | 2018-07-01 | 150 |
| 1 | 3 | ccc | 2018-08-01 | 20 |
| 1 | 1 | aaa | 2018-06-02 | 40 |
| 1 | 2 | bbb | 2018-07-02 | 70 |
| 1 | 3 | ccc | 2018-08-02 | 80 |
+-------+--------+----------+------------+-------+
Actually I have more data but I am just show the sample and what I want to do is
I want to group by cd_hs, name_cnt and based on year in dates column and do sum(value) but I have the 2 condition. First is to show value with condition cd_cnt with 1 and 2 and second condition cd_cnt without 1 and 2 so meaning I have much value other than 1 and 2 and do aliasing as other in one column
Expected Result :
+-------+------+----------+-------------+
| cd_hs | year | name_cnt | total_value |
+-------+------+----------+-------------+
| 1 | 2018 | aaa | 90 |
| 1 | 2018 | bbb | 220 |
| 1 | 2018 | other | 100 |
+-------+------+----------+-------------+
how can I do that? I am new in query and don't know what to do..

Answer 1

Your question is a bit confusing considering your spec doesn't seem to exactly line up with what you requested.
If the sample result you've provided is actually what you're looking for, a simple SUM and GROUP BY should do the trick here:
SELECT cd_hs, EXTRACT(YEAR from dates) as year, name_cnt, SUM(value_)
FROM foo
GROUP BY cd_hs, EXTRACT(YEAR from dates), name_cnt
Result:
| cd_hs | year | name_cnt | sum |
|-------|------|----------|-----|
| 1 | 2018 | aaa | 90 |
| 1 | 2018 | bbb | 220 |
| 1 | 2018 | ccc | 100 |
SQLFiddle
Since you mentioned you wanted two different totals with two separate conditions, you could use JOIN in conjunction with some well-crafted subqueries:
SELECT a.cd_hs, EXTRACT(YEAR FROM a.dates), a.name_cnt, COALESCE(b.total_a, 0) as "Total A", COALESCE(c.total_b, 0) as "Total B"
FROM foo a
LEFT JOIN (
SELECT b.cd_hs, b.name_cnt, EXTRACT(YEAR FROM b.dates), SUM(value_) as total_a
FROM foo b
WHERE b.cd_cnt NOT IN (1, 2)
GROUP BY b.cd_hs, b.name_cnt, EXTRACT(YEAR from b.dates)
) b ON a.cd_hs = b.cd_hs AND a.name_cnt = b.name_cnt
LEFT JOIN (
SELECT c.cd_hs, c.name_cnt, EXTRACT(YEAR FROM c.dates), SUM(value_) as total_b
FROM foo c
WHERE c.cd_cnt IN (1, 2)
GROUP BY c.cd_hs, c.name_cnt, EXTRACT(YEAR from c.dates)
) c ON a.cd_hs = c.cd_hs AND a.name_cnt = c.name_cnt
This particular solution is readable and will get you to the correct end result but will most likely not be scalable in its current form.
Result:
| cd_hs | date_part | name_cnt | Total A | Total B |
|-------|-----------|----------|---------|---------|
| 1 | 2018 | aaa | 0 | 90 |
| 1 | 2018 | bbb | 0 | 220 |
| 1 | 2018 | ccc | 100 | 0 |
| 1 | 2018 | aaa | 0 | 90 |
| 1 | 2018 | bbb | 0 | 220 |
| 1 | 2018 | ccc | 100 | 0 |
SQLFiddle