Question in Case Statement....

Question

Hi Gurus, I have a case statement as below: Here I have to get the Initials of person only where desc = underwriter. ( P.S sometimes there are multiple underwriter, thats why i put the min() around a character.)
Initials =
min(case when ( table1.DESC ) = 'UNDERWRITER' then table2.INITIALS when ( table1.DESC ) ='ASSIGN' then table2.INITIALS end )
Please see data below:
Underwriter Initials : SE
-------------------------------XY
Assign Initials : NR
----------------------------PQ
Through my SQL I intend to get SE for Underwriter. But my SQL returns NR as it it is the minimum in the order. Any ideas please...........
P.S: The Initials column is actually displayed in one of my reports; and the Initials column is dynamic; meaning ....i am prompting the User to select DESC values: Underwriter or Assign
and based on that the prompt; the Initials Column should display either Underwriter Initials or Assign Initials.
Thanks a lot.

Answer 1

Hi Frank, thanks a lot for your reply. I am a lot closer to solving it now. A little more help please.
The expected output is like below:
1) Initials 2) Desc
SE-------------- Underwriter
NR---------------Assign
Yes , i understand the whole purpose of case is to give different scnarios but in this case i have tried using something like:
case when CR_ROLE_TYPE_DESC_REF.ROLE_TYP_DESC = :p_role_typ_desc then CR_PARTY_DIM.PARTY_NAME_INITIALS end
but it gives me the wrong values. which i think is due to the Decode statement below:
Please see the modified SQL:
Here the user chooses prompts (DESC: Underwriter) and also pick a person name which has a decode for ASSIGN in it
SELECT
CR_ACCOUNT_DIM.ACCOUNT_NM,
min(case when ( CR_ROLE_TYPE_DESC_REF.ROLE_TYP_DESC ) = 'UNDERWRITER' then CR_PARTY_DIM.PARTY_NAME_INITIALS when ( CR_ROLE_TYPE_DESC_REF.ROLE_TYP_DESC ) ='ASSIGN' then CR_PARTY_DIM.PARTY_NAME_INITIALS end)
FROM
CR_ACCOUNT_DIM,
CR_CNSMR_RQST_PARTY_ROLE_RLSHP,
CR_PARTY_DIM,
CR_CONSUMER_RQST_DIM,
CR_BUSINESS_SGMNT_REF,
CR_CONSUMER_RQST_FACT
WHERE
( CR_CONSUMER_RQST_FACT.CNSMR_RQST_DIM_PK_ID=CR_CONSUMER_RQST_DIM.CNSMR_RQST_DIM_PK_ID )
AND ( CR_PARTY_DIM.PARTY_DIM_PK_ID= CR_CNSMR_RQST_PARTY_ROLE_RLSHP.PARTY_DIM_PK_ID )
and
decode(CR_CNSMR_RQST_PARTY_ROLE_RLSHP.ROLE_TYP_DESC,'ASSIGN',CR_PARTY_DIM.FIRST_NM || ' ' || CR_PARTY_DIM.MIDDLE_INTL || ' ' || CR_PARTY_DIM.LAST_NM ) = 'ROBERTO NIEL'
Any ideas please....