Here’s a quick tip I know some of us has overlooked at some point. When doing SELECT … UNION SELECT, where do you put the the INTO OUTFILE clause? On the first SELECT, on the last or somewhere else? The manual has the answer here, to quote: Only the last SELECT statement can use INTO […]
The much-anticipated ability to access MySQL data via a NoSQL solution has been realized. Using HandlerSocket, significant performance gains can be realized for certain workloads. Sound like something you are interested in? Join us for Percona Live London to hear Ryan Lowe, Percona’s Director of American Consulting speak on this subject. In Ryan’s session he […]
Daniel and I and the Percona release engineering team are proud to announce version 1.0.1 of Percona Toolkit. This toolkit is Percona’s suite of DBA and sysadmin productivity tools for MySQL. It is the successor to the popular Maatkit and Aspersa toolkits. Percona Toolkit is available for immediate download at percona.com/downloads/percona-toolkit/. Helpful links: Reference Manual […]
The latest Percona Server release has one new feature: now MEMORY tables can have BLOB and TEXT columns, and VARCHAR columns will not waste space due to implicit extension to CHAR.
It’s Friday again (so soon!) and time for our TGIF contest, to give away a free ticket to Percona Live London. Before we do that, though, just what in the world does this output from SHOW INNODB STATUS mean?
Mutex spin waits 5870888, rounds 19812448, OS waits 375285
To understand this text, you have to understand how InnoDB handles mutexes. It tries a […]