On Tue, 2007-10-09 at 15:09 -0500, Kevin Grittner wrote:
> I have a situation where a query is running much slower than I would
> expect. The ANALYZE showed that it is hashing some information which
> is rarely needed. When I set enable_hashjoin = off for the
> connection the query run in 1/1000 the time.
Can you confirm the two queries give identical outputs? It isn't clear
to me why the second sort is (never executed) in your second plan, which
I would only expect to see for an inner merge join.
Can you show the details for ControlRecord also.
--
Simon Riggs
2ndQuadrant http://www.2ndQuadrant.com
