| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Tatsuo Ishii <ishii(at)postgresql(dot)org> |
| Cc: | ojford(at)gmail(dot)com, vik(at)postgresfriends(dot)org, pgsql-hackers(at)postgresql(dot)org, andrew(at)tao11(dot)riddles(dot)org(dot)uk, david(at)fetter(dot)org, krasiyan(at)gmail(dot)com |
| Subject: | Re: Add RESPECT/IGNORE NULLS and FROM FIRST/LAST options |
| Date: | 2025-01-21 01:44:07 |
| Message-ID: | 3256867.1737423847@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Tatsuo Ishii <ishii(at)postgresql(dot)org> writes:
> 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.
Yeah, that would be my first thought too. The only question is
whether a function that fails to check that could crash. If it
merely gives surprising answers, I think this way is fine.
regards, tom lane
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