Scope of windowing function literal with filter Analytics

Hello
I use an analytical function and try to understand the function of windowing. I may be off-the-mark on it, then please let me know if it works just not how I think or if I implemented correctly.
using an analytical function,

http://download.Oracle.com/docs/CD/B14117_01/server.101/b10759/functions001.htm#i81407
-----
with ETRUBANS like)
Select 'aaa' groupingColumn,
1 numvalue
1 paramvalue
miscValue "ooo."
of the double
Union
Select 'aaa' groupingColumn,
1 numvalue
1 paramvalue
miscValue "hhh".
of the double
Union
Select 'aaa' groupingColumn,
1 numvalue
2 paramvalue
miscValue 'nnn '.
of the double
Union
Select 'bbb' groupingColumn,
2 numvalue
1 paramvalue
miscValue 'TT '.
of the double
Union
Select 'bbb' groupingColumn,
2 numvalue
2 paramvalue
miscValue "qqq".
of the double
Union
Select 'bbb' groupingColumn,
2 numvalue
2 paramvalue
miscValue 'ppp '.
of the double
Union
Select 'bbb' groupingColumn,
2 numvalue
3 paramvalue
miscValue "zzz".
the double)
Select groupingColumn,
Sum (numvalue) on summedNoFiltering (groupingColumn partition),
sum (case paramvalue when 1 then 0 otherwise end numvalue) on (groupingColumn score) summedWithFiltering.
sum (case paramvalue when 2 then numvalue when 2 then numvalue 0 otherwise end) on summedMoreFiltering (groupingColumn partition).
miscValue
of ETRUBANS;
/
-----

GROUPINGCOLUMN SUMMEDNOFILTERING SUMMEDWITHFILTERING SUMMEDMOREFILTERING MISCVALUE
-------------- ---------------------- ---------------------- ---------------------- ---------
nnn AAA 3 2 1
AAA 3 2 1 ooo
AAA 3 2 1 hhh
BBB 4 2 8 qqq
BBB 4 2 8 ppp
BBB 4 2 8 zzz
BBB 4 2 8 ttt

7 selected lines
-----
-----

Now this
sum (case paramvalue when 1 then 0 otherwise end numValue) on (groupingColumn partition) is exactly what I want, so the question is, can I write the above analytical in a way that I could window autour only these paramValue == > 1

in looking at http://download.oracle.com/docs/cd/B14117_01/server.101/b10759/functions094.htm#i89943 it seems that you could do something similar if it is an interval of time, is possible to do any literal?


something like this obviously doesn't work
Sum (numvalue) over (partition by previous groupingColumn by paramValue Place1 order)

the windowing function is only with respect to filtering by a set of lines instead of filtering of values?

I see. Do not worry, sum(*case*...) over (...) is preety "natural." Of course it will affect performance slightly because it must apply the case to each line in the window by comparing it to sum (...) over (...).

SY.

Tags: Database

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