Question : Create a "Batch Number" in SQL Server 2000 for import of sales orders

Hi all.

We currently have a DTS that imports sales order information in 2 tables:

myHeader and myDetails

myHeader: HeaderID, SalesOrderNumber, Customer, Date
myDetail: DetailID, SalesOrderNumber, Item, Quantity

These get imported once an hour. We have to find a way to treat all the sales orders that are imported every hour as a "batch".

So for example:

Let's say at 9am we have the following sales orders to import:
SO-1, SO-2, SO-3, SO-4 and SO-5 these would be considered Batch 1

At 10am we have the following sales orders to import:
SO-A, SO-B and SO-C these would be considered Batch 2

How can I do this in SQL? I'm thinking I would add another field to myHeader called BatchNo and in my DTS right after I import the header information to myHeader then I will do an UPDATE that will look at records where BatchNo isnull and then get the MAX(BatchNo) + 1.

But when I try doing that in my update statement I get the following error: "An aggregate may not appear in the set list of an UPDATE statement."

Below is my update code
Thank you in advance!

         
          UPDATE    myHeader
SET              BatchNumber = MAX(BatchNumber) + 1
WHERE     (BatchNumber IS NULL)

Answer : Create a "Batch Number" in SQL Server 2000 for import of sales orders

Click on Send Receive -> Send Receive Groups -> Define Send Receive Groups (at the bottom and may be what jrathi meant). Send Receive groups dialogue box opens. Send receive interval is in there. ... Thinkpads_User