Exclude Row with Same ID but Different Secondary Column Value - sql

Question

Im trying to exclude a record if the ID (PK) is the same but a secondary column value is different.
So in my example below, I have two different codes E03_Port and E12_PortfNotDef for a single ID, so basically, I want to exclude the E12_PortfNotDef record if E01.. through E04.. codes are triggered.
SELECT *
FROM (
SELECT ID, Code,
MAX(CASE WHEN Code = 'E01_Matured' THEN 1 Else NULL END) AS Matured,
MAX(CASE WHEN Code = 'E02_Terminated' THEN 2 Else NULL END) AS Terminated,
MAX(CASE WHEN Code = 'E03_Port' THEN '3' Else NULL END) AS Port,
MAX(CASE WHEN Code = 'E04_Swap' THEN 4 Else NULL END) AS Swap,
MAX(CASE WHEN Code = 'E12_PortfNotDef' THEN '12' Else NULL END) AS Port_Not_Def
FROM EXCLUDED
GROUP BY ID, Code
)
WHERE COALESCE(Matured, Terminated, Port, Swap Port_Not_Def) IS NOT NULL
AND ID = '120320AC'
ORDER BY ID;
Actual Results:
ID Code Matured Terminated Port Swap Port_Not_Def
120320AC E03_Port 3
120320AC E12_PortfNotDef 12
Expected Results:
ID Code Matured Terminated Port Swap Port_Not_Def
120320AC E03_Port 3

Answer 1

There's a trivial way might be applied by using row_number() window analytic function :
SELECT *
FROM (
SELECT ID, Code,
MAX(CASE WHEN Code = 'E01_Matured' THEN 1 Else NULL END) AS Matured,
MAX(CASE WHEN Code = 'E02_Terminated' THEN 2 Else NULL END) AS Terminated,
MAX(CASE WHEN Code = 'E03_Port' THEN '3' Else NULL END) AS Port,
MAX(CASE WHEN Code = 'E04_Swap' THEN 4 Else NULL END) AS Swap,
MAX(CASE WHEN Code = 'E12_PortfNotDef' THEN '12' Else NULL END) AS Port_Not_Def,
ROW_NUMBER() OVER (PARTITION BY Code ORDER BY ID, Code) AS RN
FROM EXCLUDED
GROUP BY ID, Code)
WHERE COALESCE(Matured, Terminated, Port, Swap Port_Not_Def) IS NOT NULL
AND ID = '120320AC'
AND RN = 1
ORDER BY ID

Answer 2

I ended up restricting the ID's in the FROM Clause to not show those where Code was E01-E04.