Re: Old-style OR indexscan slated for destruction

On Sun, 24 Apr 2005, Tom Lane wrote:

> I am about to rip out the code that supports multiple indexscans for OR
> conditions inside a single IndexScan plan node. As best I can tell,
> the new-style bitmap-OR code is as fast or faster than the old way
> even in fully cached test cases (ie, with no allowance for improved
> efficiency of disk access). So there's no percentage in maintaining
> support for the old way, and getting rid of it will allow simplification
> of code and data structures in the planner.

very good, Tom !

>
> regards, tom lane
>
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Regards,
Oleg
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Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute, Moscow University (Russia)
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