[GENERAL] non-zero xmax yet visible

I'm a little bit confused by the meaning of xmax. The documentation at http://www.postgresql.org/docs/current/static/ddl-system-columns.html says "xmax The identity (transaction ID) of the deleting transaction, or zero for an undeleted row version. It is possible for this column to be nonzero in

Re: [GENERAL] non-zero xmax yet visible

On Wed, Jan 15, 2014 at 10:48 AM, Michael Paquier wrote: > On Wed, Jan 15, 2014 at 1:26 AM, Ming Li wrote: >> I'm a little bit confused by the meaning of xmax. >> >> The documentation at >> http://www.postgresql.org/docs/current/static/ddl-system-columns.html >