DELETE IGNORE suppresses errors and downgrades them as warnings, if you are not aware how IGNORE behaves on tables with FOREIGN KEYs, you could be in for a surprise.
Let’s take a table with data as example, column c1 on table t2 references column c1 on table t1 – both columns have identical set of rows for simplicity.

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Sometimes we need to restore only some tables from a full backup maybe because your data loss affect a small number of your tables. In this particular scenario is faster to recover single tables than a full backup. This is easy with MyISAM but if your tables are InnoDB the process is a little bit different story.

I spent last week at linux.conf.au in Ballarat, Victoria (that’s the Victoria in Australia, not wherever else there may be one) which is only a pleasant two hour drive from my home town of Melbourne (Australia, not Florida). I sent an email internally to our experts detailing bits of the conference that may interest them – and I thought that it may also interest our wider readers who are interested in all levels of the software stack.

On the 25th of January at 10 am PST, I will present a webinar on preventing MySQL emergencies titled “Preventing Downtime in Production MySQL Servers”. The material I will present is based on in-depth research done by Percona across many production servers.  We analyzed more than 150 emergency cases and categorized our findings to help you learn ways to avoid production downtimes. Join us to learn more about why emergencies happen (it may be different than what you think) and what you can do to avoid them.

If you’ve missed Percona Live in Washington,DC and even if you did not you should be happy to know we have now published slides from majority of talks at this conference. Enjoy! This conference had great talks, whenever you’re Beginner or Advanced when it comes to MySQL. Also remember not to miss MySQL Conference in Santa Clara,CA April 10-12 2012.

With the recent release of Percona XtraDB Cluster, I am increasingly being asked about MySQL’s semi-synchronous replication. I find that there are often a number of misconceptions about how semi-synchronous replication really works. I think it is very important to understand what guarantees you actually get with semi-synchronous replication, and what you don’t get.

In our recent release of Percona Server 5.5.19 we introduced new value for innodb_flush_neighbor_pages=cont.
This way we are trying to deal with the problem of InnoDB flushing.

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