troubleshooting Question

identify duplicate order based on products ordered (e.g. John already orderd ProdA+B+C previously)

Avatar of jxharding
jxharding asked on
Microsoft SQL Server
3 Comments1 Solution360 ViewsLast Modified:
Hi, I require help in finding a duplicate order based on detail lines please.
e.g. John ordered ProductA + ProductB + ProductC + ProductD on one order.
I need to inform him if he attempts to order the combination of ProductA + ProductB + ProductC + ProductD again.

Attached is a horrible attempt. It is incorrect. I dont know of better.
I tried to summarize each order into one line
OrderID         Products
1                    ProductA,ProductB,ProductC,ProductD
2                    ProductB,ProductC,ProductE

but it is terrible - im using a cursor and in the real app there are thousands of records so i wont be able to use it. Please assist
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