sub-selects in CHECK - Mailing list pgsql-hackers

From nconway@klamath.dyndns.org (Neil Conway)
Subject sub-selects in CHECK
Date
Msg-id 20020727210300.GA1126@klamath.dyndns.org
Whole thread Raw
Responses Re: sub-selects in CHECK
List pgsql-hackers
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? From a (very) brief look at execMain.c, ExecEvalExpr() seems
to support subplans already, so I wouldn't *guess* it would be too
involved, but I'd appreciate a more informed assessment...

Thanks in advance,

Neil

-- 
Neil Conway <neilconway@rogers.com>
PGP Key ID: DB3C29FC


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