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Re: sub-selects in CHECK - Mailing list pgsql-hackers

From Tom Lane
Subject Re: sub-selects in CHECK
Date
Msg-id 7684.1027811233@sss.pgh.pa.us
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In response to sub-selects in CHECK  (nconway@klamath.dyndns.org (Neil Conway))
Responses Re: sub-selects in CHECK  (nconway@klamath.dyndns.org (Neil Conway))
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nconway@klamath.dyndns.org (Neil Conway) writes:
> I'd like to add the ability to use a sub-select in a CHECK constraint.
> Can someone elaborate on what changes would be needed to support
> this?

Define what you think should happen when the other rows referenced
by the subselect change.
        regards, tom lane

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