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Re: Pruning problem.
Posted by: Mattias Jonsson ()
Date: September 28, 2010 10:38AM

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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Subject Views Written By Posted
Pruning problem. 1655 Vladimiro Puggelli 09/21/2010 04:03AM
Re: Pruning problem. 858 Rick James 09/22/2010 07:57PM
Re: Pruning problem. 906 Vladimiro Puggelli 09/23/2010 03:16AM
Re: Pruning problem. 875 Rick James 09/23/2010 08:40AM
Re: Pruning problem. 843 Vladimiro Puggelli 09/24/2010 02:24AM
Re: Pruning problem. 914 Mattias Jonsson 09/28/2010 10:38AM


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