> That's why you really need to be more precise in the data structures
> you are planning on using. This can change the results significantly.
>
> So no, I don't have any specific answers to your questions as you don't
> provide any specific information in what you ask.

Yeah. Let me see if I can follow up with more concrete information
sometime in future. I find performance tuning to be workload dependent and
it is difficult to project without having all the details.

> Well disk (and memory) usage can also be important so as it seems
> InnoDB storage is "less efficient" this may actually degrade
> performance.  Until you are more concrete it's hard to say what will
> work best for you.

At this point I'm fairly convinced that this idea of vertical paritioning
a table into column tables will degrade performance unless the workload is
tailor-made for this.
The cost of joins and index lookup/column data seems a bit too high for
almost any scenario.
Thanks for the prompt response. I'll follow up with you if I have more
concrete details.

Thanks
Kyong


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