Duplicate Record Search

Question

I need help with the SQL Statement below.
SELECT DISTINCT RISK_CODE, LOB, COMPANY, STATE, RISK_CODE_DESCR, RISK_CODE_QUESTION_TEXT, EXPECTED_RESULT
FROM RISK_CODE
WHERE RISK_CODE_QUESTION_TEXT IS NOT NULL
AND ASK_INDICATOR = 'Y'
AND LOB = 'P1'
AND ((COMPANY = '' OR COMPANY IS NULL)
OR (STATE = '' OR STATE IS NULL))
I want to return the values (risk code questions) when there is a company number and where there isn't, and the same for state. The problem that I run into, is when I do have a company number (ex: 077) and a state (ex. 04), I simply return duplicate values back, and I wanted to know if there was a way to avoid that.
Not only do I need the values from a specific record (with Company and State), but I also need the records that are not company and state specific. A sample of the data is below.
RISK_CODE - LOB - COMPANY - STATE - RISK_CODE_DESCR
74 - P1 - 077 - 04 - DESCRIPTION1
74 - P1 - - - DESCRIPTION1
01 - P1 - 077 - 04 - DESCRIPTION2
01 - P1 - - - DESCRIPTION2
02 - P1 - - - DESCRIPTION3
TY - P1 - - - DESCRIPTION4
U7 - P1 - 077 - 04 - DESCRIPTION5
I don't know if this helps or not, but if I pass in the state and company I would need risk codes 74, 01, 02, and TY. But if I pass the state and company I would need 74, 01, 02, TY, and U7. I don't want duplicate records back, and don't want to have to create a huge stored procedure for this.

Answer 1

What duplicate values are you getting? From looking at you data I don't think you're getting duplicate values. What you are getting is the values for risk_code when there is a state populated and when then isn't. This is of course exactly what you've asked for.
Presumably the RISK_CODE_DESCR are different and that's why your DISTINCT isn't filtering them.
What you need to do is soemthing like this:
SELECT RISK_CODE, LOB, COMPANY, STATE, RISK_CODE_DESCR, RISK_CODE_QUESTION_TEXT, EXPECTED_RESULT
FROM RISK_CODE
WHERE RISK_CODE_QUESTION_TEXT IS NOT NULL
AND ASK_INDICATOR = 'Y'
AND LOB = 'P1'
AND ( COMPANY = '&&IN_CO' OR
      STATE = '&&IN_STATE')
UNION
SELECT RISK_CODE, LOB, COMPANY, STATE, RISK_CODE_DESCR, RISK_CODE_QUESTION_TEXT, EXPECTED_RESULT
FROM RISK_CODE
WHERE RISK_CODE_QUESTION_TEXT IS NOT NULL
AND ASK_INDICATOR = 'Y'
AND LOB = 'P1'
AND COMPANY IS NULL
AND STATE IS NULL
AND NOT EXISTS (SELECT  RISK_CODE
                FROM RISK_CODE
                WHERE RISK_CODE_QUESTION_TEXT IS NOT NULL
                AND ASK_INDICATOR = 'Y'
                AND LOB = 'P1'
                AND ( COMPANY = '&&IN_CO' OR
                      STATE = '&&IN_STATE')).
Mind you, I'm not saying it's pretty or fast.
Cheers, APC