June 20, 2013

Post: How number of columns affects performance ?

rows tend to be slower than tables with short rows. I was interested to check if the row length is the only thing whatdynamic row format table with many columns. But is it because of large number of columns or dynamic formatmeans

Post: Heikki Tuuri answers to Innodb questions, Part II

… depth here. These settings mean there can be quite… 5.0 series compact row format was implemented which can help … group and the SSD dynamic wear leveling algorithm. Iâ…what are the limits of different operations for different levels of concurrency, specifically around mutexes and contention? How does

Post: Flexviews - part 3 - improving query performance using materialized views

rows in set (0.00 sec) Using the dictionary The following SQL is dynamically… (customer_name), (DATE_FORMAT(order_date,’%Y%m’)) 1 row in set, 1 …is actually part of what the COMPLETE refresh method does during its operation…contents (using RENAME TABLE) which means that the view remains available…