Re: Reducing some DDL Locks to ShareLock

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Simon Riggs <simon(at)2ndQuadrant(dot)com>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Reducing some DDL Locks to ShareLock
Date: 2008-10-07 19:32:54
Message-ID: 3149.1223407974@sss.pgh.pa.us
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Simon Riggs <simon(at)2ndQuadrant(dot)com> writes:
> How about we put a partial unique index on instead?

We don't currently support partial indexes on system catalogs.
I forget what all would need to be fixed to make it happen, but I'm
pretty sure it's not trivial. Certainly refactoring pg_constraint
would be a lot easier.

regards, tom lane

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