RE: Classification Based on Values in a String
- From: "Dunbar, Norman (Capgemini)" <norman.dunbar.capgemini@xxxxxxxxxxxxxxxxxxxxxxxxx>
- To: <david.barbour1@xxxxxxxxx>, "Oracle-L Freelists" <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 19 Aug 2011 07:51:28 +0100
Morning all,
>> Claims coming into our system can be rejected for a variety
>> of reasons which appear as comma separated values in the
>> 'rejection_list' column of the claim table.
Ouch. Multiple data items in one column - think normalisation. The
problem is a classic case of a non-normalised database design causing
problems further down the line. (But you already know that!)
>> Basically,
>> there are two broad classes of rejects that need to be
>> separated. The classes can be broken out as those rejected
>> solely because the provider is not set up in the system and
>> everything else.
>>
>> Here's how it works:
The solution Jeremy has indicated - replacing all the '09','07' and '22'
codes with commas is the one I would have used in your situation as
well. It's going to be pretty efficient I think - not that I have tested
it - and will work. Of course, if "they" decide to add more rejection
code in the future, you'll need to revisit this code.
Good luck. I too have problems with vendors using a single column to
hold multiple values. You should see some of the queries we have to run.
:-(
Why not ask them to fix it? "That's an enhancement request and will cost
you extra". Yeah right! :-(
Cheers,
Norm.
Norman Dunbar
Contract Senior Oracle DBA
Capgemini Database Team (EA)
Internal : 7 28 2051
External : 0113 231 2051
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