Re: [HACKERS] [PATCH] WIP Add ALWAYS DEFERRED option for constraints

[Re-send; first attempt appears to have hit /dev/null somewhere. My
apologies if you get two copies.]

I've finally gotten around to rebasing this patch and making the change
that was requested, which was: merge the now-would-be-three deferral-
related bool columns in various pg_catalog tables into one char column.

Instead of (deferrable, initdeferred, alwaysdeferred), now there is just
(deferral).

All tests (make check) pass.

Sorry for the delay in doing this!

Incidentally, I had to do commit-by-commit rebasing to make the rebase
easier. I have a shell function I use for this, if anyone wants a copy
of it -- sometimes it's much easier to do this than to do one huge jump.

Nico
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