On Nov 18, 2006, at 3:15 AM, rakesh kumar wrote:
> How is the startup cost estimated in postgresql . Can u
> give me an example with necessary calculations .
> thanks .
Assuming you're talking about estimates from EXPLAIN/EXPLAIN ANALYZE,
the startup cost is the estimate of how much work it will take to
generate the first row from an operation.
--
Jim Nasby jim@nasby.net
EnterpriseDB http://enterprisedb.com 512.569.9461 (cell)