| From: | Philip Warner <pjw(at)rhyme(dot)com(dot)au> |
|---|---|
| To: | Stephan Szabo <sszabo(at)megazone23(dot)bigpanda(dot)com>, Christopher Kings-Lynne <chriskl(at)familyhealth(dot)com(dot)au> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | RE: Updating system catalogs after a tuple deletion |
| Date: | 2001-05-15 03:26:55 |
| Message-ID: | 3.0.5.32.20010515132655.02540160@mail.rhyme.com.au |
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| Lists: | pgsql-hackers |
At 19:50 14/05/01 -0700, Stephan Szabo wrote:
>
>If it's $2 in the parent,
>but the child already has a $2 defined, what should be done? The
>reason this affects drop constraint is knowing what to drop in the
>child. If you drop $2 on the parent, what constraint(s) on the child
>get dropped?
AFAIK, it is not possible to derive this. pg_dump makes the assumption that
if the constraint source is the same, and both names start with '$', then
it is inherited.
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