On Thu, 2008-05-29 at 19:18 -0500, Decibel! wrote:
> Is there a reason that we can't add a trigger to a table while a
> select is running? This is a serious pain when trying to setup
> londiste or slony.
This is constrained by locking.
There are a subset of DDL commands that might be able to be performed
with just an ExclusiveLock or ShareLock rather than an
AccessExclusiveLock. Nobody has studied which sub-statements this might
apply to, but its do-able since CREATE INDEX already does this.
-- Simon Riggs www.2ndQuadrant.comPostgreSQL Training, Services and Support
