October 3, 2006

MySQL Optimizer and Innodb Primary Key

Posted by peter

Innodb primary key is special in many senses and I was always wondering how well MySQL is integrated with Innodb to take advantage of these special features.

Lets see which things work and which things do not:
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Posted by peter @ 10:07 am :: Innodb, bugs :: 7 comments
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Long PRIMARY KEY for Innodb tables

Posted by peter

I’ve written and spoke a lot about using short PRIMARY KEYs with Innodb tables due to the fact all other key will refer to the rows by primary key. I also recommended to use sequential primary keys so you do not end up having random primary key BTREE updates which can be very expensive.

Today I would like to share practical example when you may use long primary key with value distribution far from sequential.
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Posted by peter @ 4:14 am :: Innodb, tips :: 1 comment
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