Claudio Freire <[email protected]> writes:
> On Wed, Mar 23, 2011 at 5:29 PM, Josh Berkus <[email protected]> wrote:
>> On 3/23/11 10:35 AM, Claudio Freire wrote:
>>> * consider plan bailout: execute a tempting plan, if it takes too
>>> long or its effective cost raises well above the expected cost, bail
>>> to a safer plan
>> That would actually solve this particular case. It would still require
>> us to have some definition of "safer" though.
> In my head, safer = better worst-case performance.
If the planner starts operating on the basis of worst case rather than
expected-case performance, the complaints will be far more numerous than
they are today.
regards, tom lane
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