Re: Request for Patch Feedback: Lag & Lead Window Functions Can Ignore Nulls

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От Nicholas White
Тема Re: Request for Patch Feedback: Lag & Lead Window Functions Can Ignore Nulls
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Msg-id CA+=vxNaYGyd1+KquoJAmyCacAt-x-6y=z-ScLVq0GiEJm_Bqfw@mail.gmail.com
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Ответ на Re: Request for Patch Feedback: Lag & Lead Window Functions Can Ignore Nulls  (Nicholas White <n.j.white@gmail.com>)
Ответы Re: Request for Patch Feedback: Lag & Lead Window Functions Can Ignore Nulls  (Dean Rasheed <dean.a.rasheed@gmail.com>)
Re: Request for Patch Feedback: Lag & Lead Window Functions Can Ignore Nulls  (Robert Haas <robertmhaas@gmail.com>)
Re: Request for Patch Feedback: Lag & Lead Window Functions Can Ignore Nulls  (Dean Rasheed <dean.a.rasheed@gmail.com>)
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I've attached another iteration of the patch that fixes the multiple-window bug and adds (& uses) a function to create a Bitmapset using a custom allocator. I don't think there's any outstanding problems with it now.

> Alternatively, it might be trivial to make all aggregate functions work with ignore nulls in a window context

This is a good idea, but I'd like to keep the scope of this patch limited for the time being - I'll look at doing this (along with the first / last / nth value window functions) for a later release.

Thanks -

Nick
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