ON DUPLICATE KEY UPDATE IF

I am  trying to insert or update depending on criteria. On the update I want to make sure before the update if (one Datetime value is < than the other Datetime value. then update - if not - dont do anything how do I do that

INSERT INTO Temp_MyTools(Select 0 as 'id', ToolType,SerialNumber,MAX(UploadDate) as 'FUploadTime', Cast('2012:01:01 12:00:00 AM'as DateTime) AS 'HUploadTime',  LocationID as 'DefaultLocationIndex', 1 as 'Qty' FROM Inventory_SerializedAssets Where LocationID in('" + locationIndex + "') GROUP BY SerialNumber)  ON DUPLICATE KEY UPDATE IF(FUploadTime <VALUES(FUploadTime)), FUploadTime = VALUES(FUploadTime);

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r3nderAsked:
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GaryCommented:
This should be it if I'm following your question right

...ON DUPLICATE KEY UPDATE FUploadTime = IF(FUploadTime< VALUES(FUploadTime), VALUES(FUploadTime),FUploadTime);

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r3nderAuthor Commented:
Thank you Gary!
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