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Re: (non-unique) index more efficient than partition pruning
Posted by: Rick James ()
Date: November 19, 2014 06:01PM

Here's some of what we have have discussed, plus more. In particular it includes the two SQLs that I promised you a few days ago.
http://mysql.rjweb.org/doc.php/staging_table
Please review it and let me know of any typos, goofs, missing things, wrong statements, whatever.

Was that partition pruning issue with MariaDB 5.2? There may have been improvements since then.

> partitions = idx0,idx2

That is an issue with 'bad' dates mapping to the 'first' partition. Hence it is better to have the first partition empty (bogus).

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Subject Views Written By Posted
large InnoDB table partitioning without explicit PK 2452 Miko M 11/12/2014 07:41PM
Re: large InnoDB table partitioning without explicit PK 1383 Rick James 11/13/2014 06:40PM
Re: large InnoDB table partitioning without explicit PK 1219 Miko M 11/14/2014 03:02AM
Re: large InnoDB table partitioning without explicit PK 972 Rick James 11/15/2014 12:05AM
Re: large InnoDB table partitioning without explicit PK 991 Miko M 11/16/2014 07:39PM
Re: large InnoDB table partitioning without explicit PK 875 Rick James 11/17/2014 04:21PM
Re: large InnoDB table partitioning without explicit PK 976 Rick James 11/17/2014 07:48PM
Re: large InnoDB table partitioning without explicit PK 941 Miko M 11/18/2014 02:00AM
Re: large InnoDB table partitioning without explicit PK 989 Rick James 11/18/2014 11:35PM
Re: large InnoDB table partitioning without explicit PK 1032 Miko M 11/22/2014 06:44AM
Re: large InnoDB table partitioning without explicit PK 926 Miko M 11/18/2014 01:13AM
(non-unique) index more efficient than partition pruning 1151 Miko M 11/19/2014 12:27AM
Re: (non-unique) index more efficient than partition pruning 1028 Rick James 11/19/2014 06:01PM
Re: (non-unique) index more efficient than partition pruning 1055 Miko M 11/22/2014 08:39AM
Re: large InnoDB table partitioning without explicit PK 1042 Miko M 11/14/2014 03:04AM
Re: large InnoDB table partitioning without explicit PK 1092 Miko M 11/14/2014 03:05AM
Re: large InnoDB table partitioning without explicit PK 1175 Rick James 11/15/2014 12:32AM
Re: large InnoDB table partitioning without explicit PK 1111 Miko M 11/16/2014 08:31PM
Re: large InnoDB table partitioning without explicit PK 951 Rick James 11/19/2014 12:12AM
Re: large InnoDB table partitioning without explicit PK 918 Miko M 11/22/2014 09:07AM
Re: large InnoDB table partitioning without explicit PK 911 Rick James 11/23/2014 09:00PM
Re: large InnoDB table partitioning without explicit PK 997 Miko M 12/01/2014 11:16AM


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