On 04/10/2010 12:29 AM, Tom Lane [tgl@sss.pgh.pa.us] wrote:
> Seems a bit off-topic for pgsql-performance,
What would be the appropriate forum?
> but anyway: the main
> known cause for that is if one of the tables used in the query got
> dropped (by another session) just after the query started. Could
> that have happened to you?
interesting and possible; but why doesn't locking prevent this?
Brian