Neil Conway wrote:
Another idea would be to improve the quality of the plan we generate at PREPARE time:
for instance you could generate 'n' plans for various combinations of
input parameters, and then choose the best query plan at EXECUTE time.
It's a difficult problem to solve, however (consider multiple parameters
to PREPARE, for example).


Do you mean store different plans for each different histogram segment ?

Regards
Gaetano Mendola


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