pgsql: Fix inheritance count tracking in ALTER TABLE .. - Mailing list pgsql-committers

From rhaas@postgresql.org (Robert Haas)
Subject pgsql: Fix inheritance count tracking in ALTER TABLE ..
Date
Msg-id 20100803154709.BFB567541D7@cvs.postgresql.org
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Log Message:
-----------
Fix inheritance count tracking in ALTER TABLE .. ADD CONSTRAINT.

Without this patch, constraints inherited by children of a parent
table which itself has multiple inheritance parents can end up with
the wrong coninhcount.  After dropping the constraint, the children
end up with a leftover copy of the constraint that is not dumped
and cannot be dropped.  There is a similar problem with ALTER TABLE
.. ADD COLUMN, but that looks significantly more difficult to
resolve, so I'm committing this fix separately.

Back-patch to 8.4, which is the first release that has coninhcount.

Report by Hank Enting.

Tags:
----
REL9_0_STABLE

Modified Files:
--------------
    pgsql/src/backend/commands:
        tablecmds.c (r1.332.2.2 -> r1.332.2.3)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/commands/tablecmds.c?r1=1.332.2.2&r2=1.332.2.3)

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