The Price is MySql with Jay PipesQuick! Pick a curtain! Do it now!Curtain #1:SELECT zip_code FROM table_name WHERE LEFT(zip_code,3) IN (123,456,789);What's under curtain #2 you ask?Well, I'm glad you asked! It is...ALTER TABLE table_name ADD COLUMN zip3 INTEGER UNSIGNED ZEROFILL NOT NULL, ADD INDEX idx_zip3 (zip3);What?? Another column and another index? My table already has 7,351 columns?

My initial plans got waylaid! I didn't pull out the checksumming code first, because the code wasn't at all as I remembered it. Instead, I began writing code to handle the more abstract problem of accepting two sets of rows, finding the differences, and doing something with them. I'm ending up with a little more complicated system than I thought I would. However, it's also significantly simpler in some ways. Instead of just passing references to subroutines to use as callbacks, I'm object-ifying the entire synchronization concept...

The Thanksgiving break was a welcome change of pace... and on the idle driving up and down the Californian coastline, I had a few moments to work on the MySQL External Stored Procedures project. I think I pretty much have Perl functioning fully and a couple of minor problems were resolved.Yesterday, I completed the first draft of the all-revised-from-scratch WL#3771, now titled as the Plugable

I just sent out the mail to the mailing lists to officially announce the 5.0.10 release. I have added an additional page that will keep track of the changes we make and it is available here. The change log file is included in the source package as well of course.

I am curious how the level of regression bugs will be. For Workbench we have a unit testing framework in place as well as an ever expanding suite of UI tests. We are using TestComplete and as long as the tool does not crash itself (which happens quite a lot, sadly) it is quite useful to automated the UI testing.

Please keep testing and reporting bugs. We will keep working hard to fix reported issues as fast as possible.

Eddie Awad, Oracle blogger extraordinaire, has published the 73rd edition of Log Buffer, the weekly review of database blogs. Daniel Crook is on-deck, but won’t bat until January. That leaves plenty of room for others, so I invite you to get involved. Send an email to the Log Buffer coordinator (that would be me). Here’s Eddie [...]

The first initial Memcached MySQL UDF functions version has been released. You can download them at:

http://download.tangent.org/memcached_functions_mysql-0.1.tar.gz

Developed by Brian Aker and Patrick Galbraith, These are a number of MySQL user defined functions based on libmemcached (http://tangent.org/552/libmemcached.html) mirroring libmemcached client functions.

Included are:

memc_servers_set() - sets list of memcached servers to use

memc_set(hash, value) - sets a value keyed by hash in memcached
memc_get(hash) - retrieves a value from memcached keyed by hash
memc_delete() - deletes a value from memcached keyed by hash
memc_append() - appends to the end of a value in memcached …

I have just published a page showing selected screenshots of Workbench in action. Find it here. While there are so may things to show there few shots should give a good initial impression of what the tool looks like and what I can be used for.

The shots have been taken of the 5.0.10 release that we are about to publish.

Apart form the Xen book I coauthored earlier this year the nice folks of the MySQL documentation team asked me to review parts of their MySQL Cluster Certification guide.

After a long wait it's finally out !
In contrary to the other one, this book took over a year to finish because there was actually a lot of reviewing done by different people.

You can buy it now at Lulu.com !

John might want to read it to figure out about his 5th step.

It is bit panic to see ‘Using filesort‘ from the extra field when one runs a explain of select query on MySQL server. At times it is bit annoy why MySQL optimizer does not avoid this as you can see from the following cases…

This is the information (Extra field) that scares a lot for many users from Explain output:

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          id: 1
  select_type: SIMPLE
        table: t1
         type: index
possible_keys: NULL
          key: col1key
      key_len: 5
          ref: NULL
         rows: 1000000
        Extra: USING index; USING temporary; USING filesort

Lets consider the following simple …