Why LIKE not using INDEX?

[Karam Chand]

Hello

I have a table with an intger column called ID. I have
an index on it.

Now I want to get a result with all the rows whos ID
values start with lets say 12....i.e. I want all the
IDs with data -

12
123
1234
...........

I am using this query....

select * from tablename where id like '123%'

It is returning me correct results...but the query
does not seem to be using the INDEX?

My question is ... does MySQL not uses INDEX when we
execute a LIKE command on a NUMERIC data....

Is there any better solution to this query?

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