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From "Yip Ng" <yipng...@gmail.com>
Subject Re: Optimizer work/issues/discussions....
Date Mon, 02 Oct 2006 17:54:01 GMT
Good idea, Bryan.  Perhaps dumping it in XML as a format is one option to
start with.
(I think this sort of facility can be applied to a more general case of dump
outputs.)  Then a explain tool can be used or implemented to read the XML
data and produce something more visually readable.  Of course, the plain
text format should be retained.


On 10/2/06, Bryan Pendleton <bpendleton@amberpoint.com> wrote:
> > good time to start some discussion around the various issues in the
> > current Derby optimizer
> One place I struggle is that I find logged query plans to be rather
> intimidating and hard to read. I've been thinking that it might be
> useful to put some effort into either improving the output of the query
> plan dumper, or perhaps coming up with some other tools for displaying
> and analyzing query selection behaviors.
> Is there prior art here that we can re-use? Are there good examples of
> tools which analyze and visualize query execution strategies that we
> can learn from and borrow?
> thanks,
> bryan

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