mysql query state

First we look at the log in MySQL, mainly includes: error log, query log, slow query log, transaction log, binary log;Logs are an important part of the MySQL database. The log file records the changes that occurred during the MySQL database

This article is "high-performance MySQL" Reading notes Slow Query Basics: Optimizing data accessThe most basic reason for poor query performance is that there is too much data to access. For inefficient queries, we found that the following two

1 , MySQL query cacheMany database products are able to cache the execution plan of a query, and the SQL parsing and execution plan generation phases can be skipped for the same type of SQL. MySQL also has a different type of cache: Cache the full

mysql| Reference | Reference Manual | cache | Chinese MySQL 4.1.0 chinese reference manual---dog (heart sail) Translate MySQL Reference Manual for version 4.1.0-alpha. 6.9 MySQL Query Cache Starting with MySQL 4.0.1, MySQL server has an

Installation RequirementsInstallation Environment: CentOS-6.3Installation Method: source code compilation installationSoftware Name: mysql-cluster-gpl-7.2.6-linux2.6-x86_64.tar.gzDownload Address: http://mysql.mirror.kangaroot.net/Downloads/Software

# # MySQL Database# # # Knowledge Points:1. Single-table query2. Sub-query3. Linked Table Query4. BusinessBefore we make a query, we need to build the relational table and insert some data into the data table. Prepare for the query operation.#####

MySQL turn on slow query log MySQL accelerated query speed of a unique weapon: query cache on the MySQL query cache from five angles for detailed analysis: How to query cache, how to configure, how to maintain, how to determine the performance of

If you want to disable binary mysql logs, you can. ini to the log-bin line comment out to clear the binary log, in mysql enabled the binary log state, log on to mysql as root after executing one of the following two commands: PURGEMASTERLOGSbefore202

Recently, I have been asked questions about MySQL Query Cache. I just want to sort out some MySQL Query Cache content for your reference. As the name suggests, MySQL Query Cache is used to Cache Query-related data. Specifically, the Query Cache

Brief introductionMMM (Master-master Replication Manager for MySQL) is a set of scripting programs that support dual-master failover and dual-master daily management. MMM is developed using the Perl language, which is mainly used to monitor and