sql - 条件付きカウントでグループ化

Question

成功したデバイスと失敗したデバイスの数を取得しようとしていますが、必要な数はすべて揃っていますが、正しくありません。

例えば：

select 
    t3.displayname as [PSI], 
    case when t0.compliant = 0 then count(displayname) end as [failures],
    case when t0.compliant = 1 then count(displayname) end as [success]
from lineitemsmap as t0
    inner join art_blob as t1 on t1.art_blob_id = t0.blobid
    inner join art_asset as t2 on t2.art_asset_id = t1.art_asset_id
    inner join net_ou as t3 on t3.net_ouid = t2.net_ouid
group by t3.displayname, t0.compliant

生成：

------------------------------
| PSI | failures | success   |
------------------------------
| 1   | 3        | NULL      |
------------------------------
| 2   | 4        | NULL      |
------------------------------
| 3   | 5        | NULL      |
------------------------------
| 1   | NULL     | 6         |
------------------------------
| 2   | NULL     | 7         |
------------------------------
| 3   | NULL     | 8         |
------------------------------

私はすべての結果を3行6節で返すようにしています。

Answer 1

select 
    t3.displayname as [PSI], 
    SUM(case when t0.compliant = 0 then 1 else 0 end) as [failures],
    SUM(case when t0.compliant = 1 then 1 else 0 end) as [success]
from lineitemsmap as t0
    inner join art_blob as t1 on t1.art_blob_id = t0.blobid
    inner join art_asset as t2 on t2.art_asset_id = t1.art_asset_id
    inner join net_ou as t3 on t3.net_ouid = t2.net_ouid
group by t3.displayname;