I've got an applicant table that including an ethnicity id. I need to
convert the id into a text value from a separate ethnicity lookup table
(with less than 10 entries). I can:
1. Do a subquery against the ethnicity table in the select part of the
query and alias the return value
2. Do a join to the ethnicity table

My tests on SQL 2008 show that the subquery can run into some wait time on
the server and seems to be slower and less efficient. This leads me to
think that using a join is the best idea. Would this be the general
consensus? Somehow joining to a lookup table feels wrong, but that might
just be the caffeine. :)

Thanks


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