Jeffrey G. Ubalde wrote:
Good day list!
I would just like to ask a somewhat not so intelligent question. What
is the downside of indexing almost all of the fields in a table? Is it
advisable?
Indexes have to be built... so if you did that, for every query that
alters the data many indexes will have to be written. A lot of extra
overhead if they will never be used.
Look to see where indexes are needed by the types of queries you are
writing. Add a slow query log to my.cnf.
This will give you a very good idea of where you might need some indexes.
Then trace the queries to make sure the indexes you've created are being
used.
Cheers,
Mike
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