Re: [Firebird-devel] Re: (firebird-Bugs-223060) Slow processing of GREATER-THEN operator

[Arno B. <fir...@ab...>]

Hi,

>    We can modify BTR_evaluate to not include in bitmap record numbers 
> from lower key (for x > key) and from upper key (for x < key). 
> 
>    Of course, optimizer must set some flags in IndexRetrieval to distinguish 
> cases when lower (upper) bound keys is needed in results bitmap. It can be 
> done in opt\match_index and OptimizerRetrieval::matchBoolean, if i understand 
> right.

Yes, that's why i'm talking about the segment class.

Regards,
Arno Brinkman
ABVisie

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