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From:Michael Widenius Date:October 8 2009 9:01am
Subject:Re: understanding handler::read_time and handler::scan_time
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Hi!

>>>>> "Zardosht" == Zardosht Kasheff <zardosht@stripped> writes:

Zardosht> Another question,
Zardosht> are we guaranteed that the return value of scan_time will not cause
Zardosht> the optimizer to use a full table scan over a covering index over a
Zardosht> portion of the table?

It can do that, if the scan time is very low.

Regards,
Monty
Thread
understanding handler::read_time and handler::scan_timeZardosht Kasheff7 Oct
  • Re: understanding handler::read_time and handler::scan_timeSergei Golubchik7 Oct
    • Re: understanding handler::read_time and handler::scan_timeZardosht Kasheff7 Oct
      • Re: understanding handler::read_time and handler::scan_timeZardosht Kasheff8 Oct
        • Re: understanding handler::read_time and handler::scan_timeMichael Widenius8 Oct
        • Re: understanding handler::read_time and handler::scan_timeSergei Golubchik8 Oct
          • Re: understanding handler::read_time and handler::scan_timeZardosht Kasheff8 Oct
            • Re: understanding handler::read_time and handler::scan_timeSergei Golubchik8 Oct
      • Re: understanding handler::read_time and handler::scan_timeSergei Golubchik8 Oct
      • Re: understanding handler::read_time and handler::scan_timeMichael Widenius8 Oct