MySQL Tech Day @Paris on Oct 10, 2013

September 10, 2013

MySQL Tech Day @Paris

We’re happy to announce you that MySQL Tech Day will take place in Paris on Oct 10, 2013 in Oracle main office. It’ll be a full day event giving you an occasion to listen directly from Oracle developers about most of the improvements made recently within MySQL 5.6 and 5.7 development.

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ALTER Optimization

August 14, 2012

One of my colleague asked me : « Is an ALTER TABLE with many specifications is faster than 1 ALTER TABLE by specification ? »

The answers seems quite intuitive, anyway figures are better than a long speech…

Context :

MySQL Community Server 5.5.22

InnoDB table with 8 539 238 rows.

17 columns with INT, CHAR, VARCHAR, TEXT, DATETIME, … fields

1