Re: Pruning problem.
The problem here is that you use a range, which HASH/KEY partitioning does not support pruning on (only RANGE/LIST does, as you can see on the partition level).
So I would suggest to partition BY RANGE (TO_DAYS(date_ril)).
Also note that invalid dates will be placed in the first partition (since TO_DAYS('2000-02-31') is NULL), so that partition will be searched too, so also add a 'dummy' partition as the first partition to catch these rows.
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Re: Pruning problem.
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