Sequential filtering in SQL

[Ed Kleban]

On 12/12/05 11:18 AM, "Ruslan Zasukhin" <sunshine at public.kherson.ua> wrote:

> On 12/12/05 5:40 PM, "Ed Kleban" <Ed at Kleban.com> wrote:
>  
>> When I define a calculated field in the API, and then perform a FindValue
>> for example on that field, the interface is essentially taking my method and
>> passing it over to the SQL engine somehow behind my back, getting an answer,
>> and returning a VSet somehow?
> 
> No, SQL engine is not used here. Only parser to parse formula and get nodes.
> 
> Future when you use it million times, it looks like you work with already
> compiled c++ code.
>  
>> Or does Valentina have a native expression analyzer that can interpret the
>> MethodText, render it into code for the calulcated field, and uses it for
>> Find commands without going through SQL?
> 
> yes
>   
Ruslan, you make me so happy!  This is exactly what I was looking for but
couldn't find or figure out.

Thanks!
--Ed