SQL Error "Cannot perform an aggregate function on an expression containing an aggregate or a sub query." - sql

Question

I am executing this query in Oracle. I have added the screenshots of my data and the returned results but the returned result is wrong. It is returning 1 but it should return 0.52. Because the customer(see in attached screenshot) have codes 1,2,4,31 and for 1,2,4 he should get 0.70 value and for 31 he should get 0.75 and then after multiplication the returned result should be 0.52 instead of 1.
I am really stuck here. Please help me. I will be very thankful to you.
Here is my query. What I actually want to do is I want to calculate points value given to every customer on the basis of codes they got.
If a customer have code = 1 then he will get 0.70 points and then if he have code = 2 and 4 too then I do not want to give him extra 0.70 for code 2 and 4.
Let me be simple. If a customer have all of these codes 1, 2, 4 then he will only get 0.70 points for once, but if he have code 4 only then he will get 0.90, but if he got code 31 too then he will get extra 0.75 for having code 31. Does it make sense now?
SELECT
RM_LIVE.EMPLOYEE.EMPNO, RM_LIVE.EMPNAME.FIRSTNAME,
RM_LIVE.EMPNAME.LASTNAME, RM_LIVE.CRWBASE.BASE ,RM_LIVE.CRWCAT.crwcat AS "Rank",
nvl(nullif(MAX(CASE WHEN RM_LIVE.CRWSPECFUNC.IDCRWSPECFUNC IN (29,721) THEN 0.25 ELSE 1 END),0),1) *
nvl(nullif(MAX(CASE WHEN RM_LIVE.CRWSPECFUNC.IDCRWSPECFUNC IN (31,723) THEN 0.75 ELSE 1 END),0),1) *
nvl(nullif(MAX(CASE WHEN RM_LIVE.CRWSPECFUNC.IDCRWSPECFUNC = 861 THEN 0.80 ELSE 1 END),0),1) *
nvl(nullif(MAX(CASE WHEN RM_LIVE.CRWSPECFUNC.IDCRWSPECFUNC IN (17,302,16) THEN 0.85 ELSE 1 END),0),1) *
nvl(nullif(MAX(CASE WHEN RM_LIVE.CRWSPECFUNC.IDCRWSPECFUNC IN (3,7) THEN 0.90 ELSE 1 END),0),1)*
nvl(nullif(MAX(CASE WHEN RM_LIVE.CRWSPECFUNC.IDCRWSPECFUNC IN (921,301,30,722,601,581) THEN 0.50 ELSE 1 END),0),1) *
nvl(nullif(MAX(CASE WHEN RM_LIVE.CRWSPECFUNC.IDCRWSPECFUNC IN (2,1, 4) THEN 0.70 ELSE 1 END),0),1) *
nvl(nullif(MIN(CASE WHEN RM_LIVE.CRWSPECFUNC.IDCRWSPECFUNC IN (1,2) then 0 else 1 END) *
MAX(CASE WHEN RM_LIVE.CRWSPECFUNC.IDCRWSPECFUNC IN (4) then 0.20 else 0 END),0),1) AS "FTE VALUE"
FROM RM_LIVE.EMPBASE,
RM_LIVE.EMPLOYEE,
RM_LIVE.CRWBASE,
RM_LIVE.EMPNAME,
RM_LIVE.CRWSPECFUNC,
RM_LIVE.EMPSPECFUNC,RM_LIVE.EMPQUALCAT,RM_LIVE.CRWCAT
where RM_LIVE.EMPBASE.IDEMPNO = RM_LIVE.EMPLOYEE.IDEMPNO
AND RM_LIVE.EMPBASE.IDCRWBASE = RM_LIVE.CRWBASE.IDCRWBASE
AND RM_LIVE.EMPLOYEE.IDEMPNO = RM_LIVE.EMPNAME.IDEMPNO
AND RM_LIVE.EMPSPECFUNC.IDCRWSPECFUNC =RM_LIVE.CRWSPECFUNC.IDCRWSPECFUNC
AND RM_LIVE.EMPSPECFUNC.IDEMPNO =RM_LIVE.EMPLOYEE.IDEMPNO
AND RM_LIVE.EMPQUALCAT.IDEMPNO=RM_LIVE.EMPLOYEE.IDEMPNO
AND RM_LIVE.CRWCAT.IDCRWCAT = RM_LIVE.EMPQUALCAT.IDCRWCAT
AND RM_LIVE.CRWCAT.crwcat IN ('CP','FO','CM','MC')
AND RM_LIVE.CRWBASE.BASE <> 'XYZ'
AND RM_LIVE.CRWSPECFUNC.IDCRWSPECFUNC IN
('921','2' ,'1','301','17','4','3','7','302' ,'861','31',
'723','30','722 ','29 ','721','16','601','581')
AND RM_LIVE.EMPBASE.STARTDATE <= SYSDATE
AND RM_LIVE.EMPBASE.ENDDATE >= SYSDATE
AND RM_LIVE.EMPSPECFUNC.STARTDATE <= SYSDATE
AND RM_LIVE.EMPSPECFUNC.ENDDATE >= SYSDATE
AND RM_LIVE.EMPNAME.FROMDATE <=SYSDATE
AND RM_LIVE.EMPQUALCAT.STARTDATE <= SYSDATE
AND RM_LIVE.EMPQUALCAT.ENDDATE >= SYSDATE
GROUP BY RM_LIVE.EMPLOYEE.EMPNO, RM_LIVE.EMPNAME.FIRSTNAME,
RM_LIVE.EMPNAME.LASTNAME, RM_LIVE.CRWBASE.BASE,RM_LIVE.CRWCAT.crwcat;

Answer 1

According to desired reasult comment, try this
SELECT [id]
,[name]
, r = max(CASE WHEN [code] IN (1,2,4) then 100 else 0 end)
+ max(CASE WHEN [code] IN (8) then 80 else 0 end)
FROM
-- your table here
(values (1, 'ali',4)
,(1, 'ali',1)
,(1, 'ali',8)
) as t(id, name,code)
GROUP BY id, name;
EDIT another story for excluding something.
Any of 1,2,4 give 100 plus if it was only 4 without (1,2) add 400.
SELECT [id]
,[name]
, r = max(CASE WHEN [code] IN (1,2,4) then 100 else 0 end)
+ min(CASE WHEN [code] IN (1,2) then 0 else 1 end)
* max(CASE WHEN [code] IN (4) then 400 else 0 end)
+ max(CASE WHEN [code] IN (8) then 80 else 0 end)
FROM
-- your table here
(values (1, 'ali',4)
,(1, 'ali',1)
,(1, 'ali',8)
,(2, 'ali',4)
,(2, 'ali',8)
) as t(id, name,code)
GROUP BY id, name;
EDIT 2 If you need multiply scores, replace + with * and convert 0 into 1.
SELECT [id]
,[name]
,r = isnull(nullif(
max(CASE WHEN [code] IN (1,2,4) then 100 else 0 end)
,0),1)
* isnull(nullif(
min(CASE WHEN [code] IN (1,2) then 0 else 1 end)
* max(CASE WHEN [code] IN (4) then 400 else 0 end)
,0),1)
* isnull(nullif(
max(CASE WHEN [code] IN (8) then 80 else 0 end)
,0),1)
FROM
-- your table here
(values (1, 'ali',4)
,(1, 'ali',1)
,(1, 'ali',8)
,(2, 'ali',4)
,(2, 'ali',8)
) as t(id, name,code)
GROUP BY id, name;

Answer 2

You missed a comma (,) before the calculating the sum.
So your code should be:
SELECT [id]
,[name]
,SUM(CASE WHEN (SELECT [code]
FROM [Test].[dbo].[testcode] as ts
WHERE ts.id = t.id) IN (1,2,4)
then 100
else 10
end) as "total"
FROM [Test].[dbo].[testcode] as t
GROUP BY id, name

Answer 3

You're already selecting from the testcode table - no need to do any subqueries in your CASE expression - just use this code:
SELECT
[id], [name],
SUM(CASE
WHEN [code] IN (1, 2, 4)
THEN 100
WHEN [code] = 8
THEN 80
END) AS [total]
FROM
[Test].[dbo].[testcode] AS t
GROUP BY
id, name