Re: understanding handler::read_time and handler::scan_time

[Zardosht Kasheff]

handler::index_only_read_time() does not exist in 5.1.36.

My guess is that it depends on how the return value of scan_time
relates to get_index_only_read_time(), right?

-Zardosht

On Thu, Oct 8, 2009 at 5:06 AM, Sergei Golubchik <serg@stripped> wrote:
> Hi, Zardosht!
>
> On Oct 07, Zardosht Kasheff wrote:
>> Another question,
>>
>> are we guaranteed that the return value of scan_time will not cause
>> the optimizer to use a full table scan over a covering index over a
>> portion of the table?
>
> Looks like it depends on what you return in handler::index_only_read_time().
>
> Regards / Mit vielen Grüßen,
> Sergei
>
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