>> No, there needs to be a way for the individual window function to
>> throw error if that's specified for a function that can't handle it.
>> I'm just saying I don't want that to be hard-wired in some centralized
>> spot.
>
> Would it be acceptable to add a bool column to pg_proc, say
> "pronulltreatment"? It would default to false, and an error would be
> thrown if the null clause is specified for a function where it's set
> to false?
It needs lots of work including modifying CREATE FUNCTION
command. Instead you could add an API to WinObject access functions to
export ignore_nulls value. Then let each window function check it. If
the window function should not take IGNORE/RESPECT NULLS option, throw
an error.
Best reagards,
--
Tatsuo Ishii
SRA OSS K.K.
English: http://www.sraoss.co.jp/index_en/
Japanese:http://www.sraoss.co.jp
