CODEWITHSUNDEEP
sql-serversql-server-2008select
thevan
thevan

Reputation: 10364

Update Select Case Statement in SQL Server:

I have written the below update statement to update the StatusID of the PLN_DU_Vendor table. 

UPDATE 
PLN_DU_Vendor
SET
    PLN_DU_Vendor.StatusID = 2
FROM
    PLN_DU_Vendor 
INNER JOIN PMT_RFDDetail D ON PLN_DU_Vendor.DUID = D.DUID
INNER JOIN PMT_RFDHeader H ON H.RFDID = D.RFDID AND PLN_DU_Vendor.VendorID = H.VendorID
INNER JOIN PLN_LASCO_Header LH ON LH.LASCOID = H.LASCOID AND LH.ReleaseID = PLN_DU_Vendor.ReleaseID
AND PLN_DU_Vendor.VendorDUQuantity = (D.DespatchQuantity + ISNULL(PLN_DU_Vendor.RFDQuantity, 0))
WHERE
     H.RFDID = 10

If the condition

PLN_DU_Vendor.VendorDUQuantity = (D.DespatchQuantity + ISNULL(PLN_DU_Vendor.RFDQuantity, 0))

fails, I need to update the StatusID as 1. How to do this in the same update select statement.

Upvotes: 2

Views: 16879

Answers (2)

bitoshi.n
bitoshi.n

Reputation: 2318

You cannot compare any floating point number whit operator = 

PLN_DU_Vendor.VendorDUQuantity = (D.DespatchQuantity + ISNULL(PLN_DU_Vendor.RFDQuantity, 0))

So, it would better to

PLN_DU_Vendor.VendorDUQuantity - (D.DespatchQuantity + ISNULL(PLN_DU_Vendor.RFDQuantity, 0)) < ERROR

Upvotes: 0

John Dewey
John Dewey

Reputation: 7093

Looks like you'll want to move the condition from the JOIN to the assignment as a CASE statement:

UPDATE 
PLN_DU_Vendor
SET
    PLN_DU_Vendor.StatusID = CASE 
    WHEN PLN_DU_Vendor.VendorDUQuantity = (D.DespatchQuantity + ISNULL(PLN_DU_Vendor.RFDQuantity, 0))
    THEN 2
    ELSE 1
    END
FROM
    PLN_DU_Vendor 
INNER JOIN PMT_RFDDetail D ON PLN_DU_Vendor.DUID = D.DUID
INNER JOIN PMT_RFDHeader H ON H.RFDID = D.RFDID AND PLN_DU_Vendor.VendorID = H.VendorID
INNER JOIN PLN_LASCO_Header LH ON LH.LASCOID = H.LASCOID AND LH.ReleaseID = PLN_DU_Vendor.ReleaseID
WHERE
     H.RFDID = 10

Upvotes: 6

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