Update using SubQuery - SQL Server Forums

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Update using SubQuery

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Topic

Steve33056
Starting Member

2 Posts

Posted - 2010-02-23 : 11:39:18

Hello,
My name is Steve. This is a great resource and extremely valuable.

Here is what I am trying to accomplish.

I have a table with 3 subclaims.
Policy SubClaim cStatus cPureClaimStatus
CA-27979-0 CAFL0000000049 CL NULL
CA-27979-0 CAFL0000000049 OP NULL
CA-27979-0 CAFL0000000049 OP NULL

I want to update all cPureClaimStatus of each subclaim to 'OP' if any cStatus value is 'OP' else cStatus = 'CL'. So in the case above I should have cPureClaimStatus = 'OP' for all 3 records even though one of the subclaims is CL for closed.

End Result
Policy SubClaim cStatus cPureClaimStatus
CA-27979-0 CAFL0000000049 CL OP
CA-27979-0 CAFL0000000049 OP OP
CA-27979-0 CAFL0000000049 OP OP

How do I do this? Thanks in advance for your help.

Steve33056
Starting Member

2 Posts

Posted - 2010-02-23 : 11:41:13

Hello Again,

BTW, The subquery will be on the same table as these fields are in. There is no second table. The table name is tblMIS_CLM_ClaimInfo

Thanks again

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2010-02-23 : 12:12:55

[code]UPDATE t
SET t.cPureClaimStatus =CASE WHEN t1.StsCnt > 0 THEN 'OP' ELSE 'CL' END
FROM Table t
INNER JOIN (SELECT Policy, SubClaim, SUM(CASE WHEN cStatus='OP' THEN 1 ELSE 0 END) AS StsCnt
FROM table
GROUP BY Policy, SubClaim)t1
ON t1.Policy = t.Policy
AND t1.SubClaim = t.SubClaim
[/code]

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

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