Hi, all,
i know this is probably splitting hairs, and i ask only out of curiosity,
not because i'm looking to optimize at this level...
Given a Fossil repository db (namely the event.mtime value, a Julian Day),
which of the following is faster for finding the min/max value of that
field:
SELECT
On Thu, Mar 13, 2014 at 11:37 AM, Stephan Beal wrote:
> Hi, all,
>
> i know this is probably splitting hairs, and i ask only out of curiosity,
> not because i'm looking to optimize at this level...
>
> Given a Fossil repository db (namely the event.mtime value, a Julian Day),
> which of the follow
On Thu, Mar 13, 2014 at 7:50 PM, Andreas Kupries
wrote:
> WIBNI regardless of which form is faster, the engine would detect and
> rewrite the slower into the other ?
>
i wouldn't quite expect the engine to figure that out, but of course would
be happy if it could.
> Note: Which is faster might
On Thu, Mar 13, 2014 at 2:37 PM, Stephan Beal wrote:
> Hi, all,
>
> i know this is probably splitting hairs, and i ask only out of curiosity,
> not because i'm looking to optimize at this level...
>
> Given a Fossil repository db (namely the event.mtime value, a Julian Day),
> which of the follow
On Thu, Mar 13, 2014 at 11:06 PM, Richard Hipp wrote:
>
> Once you do that, you'll see that the opcode sequence is only slightly
> different between the two. They should both run at about the same speed.
> I doubt you'll be able to measure the difference.
>
>
Actually a comparatively long (10,0
On Fri, Mar 14, 2014 at 8:41 AM, Max Vlasov wrote:
> On Thu, Mar 13, 2014 at 11:06 PM, Richard Hipp wrote:
>
> >
> > Once you do that, you'll see that the opcode sequence is only slightly
> > different between the two. They should both run at about the same speed.
> > I doubt you'll be able to
On Fri, Mar 14, 2014 at 4:51 PM, Richard Hipp wrote:
>>
> In the original problem, there was already an index on the term for which
> the min() was requested.
>.
> Whit your CTE-generated random integers, there is not an index on the
> values. So "SELECT min(x) FROM..." does a linear search
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