Emergency

Search Results for: drop all indexes of database in mysql

Recovery after DROP & CREATE

In a very popular data loss scenario a table is dropped and empty one is created with the same name. This is because  mysqldump in many cases generates the “DROP TABLE” instruction before the “CREATE …


Find unused indexes

I wrote one week ago about how to find duplicate indexes. This time we’ll learn how to find unused indexes to continue improving our schema and the overall performance. There are different possibilites and we’ll …


How to Stop Playing “Hop and Seek”: MySQL Cluster and TokuDB

As a TokuDB storage engine developer, numerous times I’ve been struck by the similarities between MySQL Cluster and TokuDB. Namely, many times where I find myself thinking, “TokuDB would benefit from this feature”, I also …


Find and remove duplicate indexes

Having duplicate keys in our schemas can hurt the performance of our database: They make the optimizer phase slower because MySQL needs to examine more query plans. The storage engine needs to maintain, calculate and …


Tokutek and PalominoDB Partner to Bring Scale, Performance to Database Deployments

MySQL storage engine provider joins forces with leading database consultants to deliver support for growing number of MySQL and MariaDB customers Lexington, MA – (May 2, 2012) – Tokutek, the leader in high-performance and agile …


Tokutek to Speak at 2011 IOUG Collaborate 11 and O’Reilly MySQL Conference

Tokutek, the leading innovator in high-performance and agile schema storage engines, announced today that its team members will be speaking at both the IOUG Collaborate 11 in Orlando, FL, on April 11, 2011 and the …


MySQL Partitioning: A Flow Chart

In Part 1, and Part 2 of this series, I presented some thoughts on partitioning. I heard some great feedback on why people use partitioning. Here, I present a flow chart that summarizes what I’ve …


Ultimate MySQL variable and status reference list

I am constantly referring to the amazing MySQL manual, especially the option and variable reference table. But just as frequently, I want to look up blog posts on variables, or look for content in the …


Clustering indexes vs. Covering indexes

Yesterday, I (Zardosht) posted an entry introducing clustering indexes. Here, I elaborate on three differences between a clustering index and a covering index: Clustering indexes can create indexes that would otherwise bounce up against the …


High-Performance Click Analysis with MySQL

We have a lot of customers who do click analysis, site analytics, search engine marketing, online advertising, user behavior analysis, and many similar types of work.  The first thing these have in common is that …