On the MySQL Cluster Forum, there was a thread “any production clusters yet?” to which this was a reply

I’m using NDB in production with a high-traffic web site. We have about 500,000 members and lots of surge activity at specific times. What I’m finding is that the web server goes but the cluster doesn’t break a sweat.

sweet.

Dear MySQL users, MaxDB users and friends,

We welcome you to a series of MaxDB postings on planetmysql.org.

Over the next weeks the MySQL MaxDB team will present MaxDB to you. We plan to write one posting per week, starting with today. Blog entries will be published every wednesday as our work constraints permit. All postings together might make a complete and comprehensive MaxDB course.

What is MaxDB by MySQL?

MySQL AB delivers two enterprise-level database systems. The first database is the MySQL Server. With more than 8 million active installations, it is the world’s most popular open source database. The latest General Available (GA) Release is MySQL …

Dear MySQL users, MaxDB users and friends,

We welcome you to a series of MaxDB postings on planetmysql.org.

Over the next weeks the MySQL MaxDB team will present MaxDB to you. We plan to write one posting per week, starting with today. Blog entries will be published every wednesday as our work constraints permit. All postings together might make a complete and comprehensive MaxDB course.

What is MaxDB by MySQL?

MySQL AB delivers two enterprise-level database systems. The first database is the MySQL Server. With more than 8 million active installations, it is the world’s most popular open source database. The latest General Available (GA) Release is MySQL …

Zack has been promoted to Executive Vice President of Marketing. Go Zack. You're the best person for the job.

I pushed live the new Wikipedia article on MaxDB.

The majority of the credit for this article goes to ulfw_rss, from the MaxDB group at MySQL

Tonight's MYSQL Meetup has been cancelled due to folks having some issues with the location. I talked to David Dilbeck, the local organizer, today, and we're interesting in finding out where a good meeting place is for local MySQLers. So, if you are in the area, please join in the discussion and vote for a good place.

However, the Columbus PHP Meetup next Thursday is still on, and looks to have a good group of people coming. It's at the North Market, in the Short North area, and if that turns out to be a good venue, I'll suggest it to David and the MySQl Meetup group... Hope to see a lot of faces next Thursday!

David and I also talked about possibly organizing a regional Meetup (say, …

Since joining Alfresco in November, I've been surprised by the quality (and size) of the companies trying out our products. That said, I've also been equally surprised by the sometimes negative feedback the company gets. This is typical of any company, but the difference in open source is that you get it earlier, louder (perhaps), and more publicly (on the company's forums, etc.).

It's aggravating at times - of course as a human being, you want to hear the positives, not the negatives. But I've actually come to appreciate the "grousers" as much, and in some cases, more, than the silent majority that love us and buy from us without logging a single complaint. One example is a Fortune 1000 company that I'm not sure will ever buy from us, and has "cost us" a fair amount of time/resources. The upside of that engagement is that we've had fantastic feedback from a large company that is using Alfresco in a quasi-production environment. Excellent …

Germany is one of MySQL's biggest markets. There's a thriving open source community, many talented developers, a long history of innovation and -- until recently -- very conservative IT buyers. However, we made an early investment in Germany a few years back, which led to gradual expansion and a big payoff in 2005. We have added many new customers in Germany including companies like major online retailer Neckerman, T-Systems, Sony International, Siemens, Bayer, Braun, Handy.de, Lycos Europe, HypoVereinsbank, Lufthansa, Deutsche Post and many others.

We're also starting to see open source become more widely accepted in many mainstream German organizations.  There's a good write up in the InfoWorld blog below by Matthew Langham discussing the recent "Open Source Meets Business" …

I am on a flight checking out my "Drafts" folder. This is obviously where I keep all of the crack pot email I mean to send to airline CEOs, co-workers, governmental officials, and old friends who I have lost touch with since I never sent the email saying "Hi! Still alive. How goes your life? Cheers!".

More then a hundred pieces of email, dating back around three years. Why three years? Since that is the last time I switched email applications and lost the contents of my last Drafts folder.

Sixty-eight of these are posts to LJ. If you consider the fact that I only started emailing posts to LJ a few years ago, and have had an account for seven years, you can see that this is a very small number of the journal posts that have not made it into my blog. Toss in the dozens of picture cam posts that have gone the way of the dodo and there is quite a bit that is not being published.

Yes, you can release your …

The following is a little SQL challenge I have so far been unable to complte myself. Lets say I have a table with transactions for different products.

CREATE TABLE transactions (
  product_id int(11) NOT NULL,
  transaction_id int(11) NOT NULL,
  price decimal(18,2) NOT NULL
);

The transaction_id's increase with time. In reality there is a transaction_date column, but I wanted to keep the DDL as portable as possible for this example. Here is some sample data.

INSERT INTO transactions VALUES (1, 1, '2.00');
INSERT INTO transactions VALUES (1, 2, '3.00');
INSERT INTO transactions VALUES (1, 4, '3.00');
INSERT INTO transactions VALUES (1, 5, '1.00');
INSERT INTO transactions VALUES (2, 6, '3.00');
INSERT INTO transactions VALUES (2, 7, '5.00');
INSERT INTO transactions VALUES (2, 8, '3.00');
INSERT INTO transactions VALUES (2, 9, '3.00');

Now a query to get the last price for each product could look like …