Обсуждение: startup cost estimate

Hi ,
         How is the startup cost estimated in postgresql . Can u give me an example with necessary calculations .
                                       thanks .

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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.
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Jim Nasby                                            jim@nasby.net
EnterpriseDB      http://enterprisedb.com      512.569.9461 (cell)