July 24, 2008 01:36pm pdt

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05.16.2008 at 03:23PM PDT, ID: 23409908

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9.1

Incorrect date Conversion in Query

Zones: MS SQL Server, Microsoft Access Database, SQL Query Syntax

The following query gives amongst other things the lead time defined as the diference between the
date of delivery ("DateDelivery") and the date of shipment ("DateShip").
If there's no delivery date (i.e. the shipment is still in transit)
the lead time is the difference between the current date/time and the date ship.

this was supposed to be calculeted by:

cast(CASE WHEN [DateDelivery] is null THEN getdate()- shipdate ELSE [DateDelivery] - [DateShip] END as decimal(15,10)) as LeadTime,

But for example as you can see I have afilter to show a single shipment (BOOKINGID=14762)

for this record Dateship=5/12/08 (With no hours)
getdate is 5/16/08 15:20

therefore the date difference is 1/4/1900 15:20
which when converted to days is 4.638888889

but the query is giving me a result of 6.93!

If this was the case then I would have people very upset.

My question Is how do I get the true leadtime with and without a delivery date?

         
             SELECT    top 100 percent  dbo.TBLShipments.BookingID, dbo.TBLCustomers.CustomerCode, dbo.TBLShipments.DateLoad, dbo.TBLShipments.DateShip, 
                      dbo.TBLShipments.DatePickup, dbo.TBLShipments.DateDelivery, dbo.TBLShipments.DateAppt,
CASE WHEN [DateDelivery] is null THEN 'In Transit'  ELSE 'Delivered' END as LT_Status,
'Month' = datename(year,[DateShip])+' - ' + right('00' +cast(datepart(month,[DateShip]) as varchar),2),
'Week' = datename(year,[DateShip])+' - ' + right('00' +cast(datepart(week,[DateShip]) as varchar),2),
 
cast(CASE WHEN [DateDelivery] is null THEN getdate()- shipdate ELSE [DateDelivery] - [DateShip] END as decimal(15,10)) as LeadTime,
GETDATE() AS POLLO
 
FROM         dbo.TBLShipments INNER JOIN
                      dbo.TBLCustomers ON dbo.TBLShipments.CustomerID = dbo.TBLCustomers.CustomerID
WHERE     (dbo.TBLShipments.DateShip IS NOT NULL) AND (BOOKINGID=14762)
ORDER BY dbo.TBLShipments.DateShip DESC, dbo.TBLCustomers.CustomerCode

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Question Stats

Zone: Programming

Question Asked By: TOPIO

Solution Provided By: MohammedU

Participating Experts: 2

Solution Grade: A

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