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Re: is there any defect when use null column in postgresql? - Mailing list pgsql-general

From leopay
Subject Re: is there any defect when use null column in postgresql?
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Msg-id e9369e430903152039md98d118tf17e6af5ac4451d7@mail.gmail.com
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In response to Re: is there any defect when use null column in postgresql?  (Scott Marlowe <scott.marlowe@gmail.com>)
Responses Re: is there any defect when use null column in postgresql?
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On Mon, Mar 16, 2009 at 11:36 AM, Scott Marlowe <scott.marlowe@gmail.com> wrote:
On Sun, Mar 15, 2009 at 9:00 PM, leopay <leopay@gmail.com> wrote:
> I wanna if there is any defact when use null column in pg,
> e.g. performance issue

none that I know of.  Any more specific scenarios you're wondering about?
when do the query, the column contain none value could use the index?

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