TSql Lookup function

I have a bunch of dimension tables that have unique ID and Name fields. I need a T-SQL function that returns an ID when p开发者_C百科assed a table name and a value for the name field.

I'm guessing the function would build a little query then execute it? Performance isn't an issue since this is a one time ETL thing.

Sounds like you want a scalar user defined function There's a lot of other ways to do it though, and udf's certainly can have some perfomance issues.