troubleshooting Question

SQL: "and" criteria across multiple rows

Avatar of Darinwc
Darinwc asked on
Microsoft SQL Server 2008Microsoft SQL ServerDatabases
18 Comments2 Solutions440 ViewsLast Modified:
forgive me because this is very hard to explain.

I am trying to write a query that will find records based on multiple criteria. However the criteria can be spread across multiple rows, rather than multiple columns.

Here is an example:

people table: (personID, personName)

purchase table: (purchaseID, ItemName, personID)
3,peanut butter,2
6,peanut butter,1

OK, so I want to know who bought BOTH peanut butter and jelly.
But if I use
WHERE itemname = "peanut butter" and itemName = "jelly"
then obviously I get nothing.

Please help thank you.
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