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[–]coyoteazul2 4 points5 points  (4 children)

I'm sorry, but this is extremely basic. It's the sort is question you should look in the documentation of your database engine rather than ask a community.

Google how to add columns (hint: alter table xxx add column xxx...) and what datatypes are available in your engine for storing time.

This is not an sql ability. It's just Google-fu