Create New Columns from Row Values then Group By - sql

Question

My current table looks like this:
+-------+------+
| Level | Team |
+-------+------+
| 1 | 1 |
| 2 | 1 |
| 2 | 1 |
| 3 | 2 |
| 3 | 2 |
| 3 | 2 |
+-------+------+
I want to group by level and know the count of level for both teams. I can easily get the count of a single team by using the following:
SELECT Level, Count(Team)
FROM table
WHERE Team = 1
GROUP BY Level
SORT BY Level;
+-------+-------------+
| Level | Team1_Count |
+-------+-------------+
| 1 | 1 |
| 2 | 2 |
| 3 | 0 |
+-------+-------------+
However, the end result I want is below:
+-------+-------------+-------------+
| Level | Team1_Count | Team2_Count |
+-------+-------------+-------------+
| 1 | 1 | 0 |
| 2 | 2 | 0 |
| 3 | 0 | 3 |
+-------+-------------+-------------+
Removing the WHERE clause gives the total per Level but does not split it into Teams. How do I make it so both of these new columns are created and show the counts per Level?

Answer 1

Try the following using case expression with sum. Here is the demo.
select
level,
sum(case when team = 1 then 1 else 0 end) as Team1_count,
sum(case when team = 2 then 1 else 0 end) as Team2_count
from table
group by
level
order by
level
output
| level | Team1_count | Team2_count |
| ----- | ----------- | ----------- |
| 1 | 1 | 0 |
| 2 | 2 | 0 |
| 3 | 0 | 3 |
if you are using postgreSQL then you can use filter with count as following
select
level,
count(*) filter (where team = 1) as Team1_count,
count(*) filter (where team = 2) as Team2_count
from tableA
group by
level
order by
level