Flatten association table to multi-value column?

Question

I have a table with just product ID\'s and category ID\'s (products can be in more than one category). How can I flatten the category ID\'s into a product column so I end us

Answer 1

There's no in-built way to do it in MSSQL.

Simulating group_concat MySQL function in Microsoft SQL Server 2005? has a good description of how to go about implementing a workaround.