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Database Administration
Database backups, replication, installation, performance tuning, High Availability. Thursday, 19 May 2016. Want to delete hierarchical data in MySQL. Another way to delete hierarchical data is to first identify all child tables (at all N levels deep), this could be difficult if you are dealing with a big schema (with 100s of tables) and then start delete operation in reverse order i.e. delete data from child table first. Http:/ dev.mysql.com/doc/refman/5.7/en/key-column-usage-table.html. Rows vs 1 rows.
mysqloptimization.com - mysqloptimization.com információ, képek, hirek.
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mysqloptimizerteam.blogspot.com
MySQL Optimizer Team blogs
MySQL Optimizer Team blogs. Your source to MySQL optimizer news. Posted by Jørgen Løland. Subscribe to: Posts (Atom). Simple template. Powered by Blogger.
MySQLOracle.com | 予人玫瑰手有余香
192168.12.66 hadoop1. 192168.12.67 hadoop2. 192168.12.69 hadoop3. Http:/ shiyanjun.cn/archives/934.html. Cd /usr/local/ & wget http:/ mirrors.hust.edu.cn/apache/kafka/0.8.2.1/kafka 2.11-0.8.2.1.tgz. Tar xvzf kafka 2.11-0.8.2.1.tgz & mv kafka 2.11-0.8.2.1 kafka & chown -R kafka:kafka /usr/local/kafka. Zookeeper.connect=hadoop1:2181,hadoop2:2181,hadoop3:2181/kafka. Sh /usr/local/zookeeper-3.4.6/bin/zkCli.sh. Zk: localhost:2181(CONNECTED) 0] create /kafka ”. Zk: localhost:2181(CONNECTED) 3] ls /. Topic: my-...
MySql培训-MySql教程-MySql培训课程场-高效开启职业生涯
My SQL Perception
Monday, October 05, 2009. Automating SQL Tasks with VBScript (SQL DMO). Needless to mention, we come across instances when we want to automate certain SQL Tasks. We might be in need of the automation because we might want to accomplish some repeated work, or there is a requirement as part of the project. 1 Connect to SQL Server. SServer = ".". Set oSQLServer = CreateObject("SQLDMO.SQLServer"). OSQLServer.LoginSecure = True. 2 Back up Database. SServer = ".". RootDir = "D: Backup ". SServer = ".". Set Wsh...
My SQL Perception | All I know about Microsoft SQL Server!
All I know about Microsoft SQL Server! Run stored procedure from Execute SQL Task, Output result to Excel. July 30, 2010. Open the SQL Server Business Intelligence Development Studio and create a new project. In the Control Flow tab, drag a Data Flow Task. Double click it to go to Data Flow tab. In the Data Flow tab, drag an OLE DB Source Task. Double click the OLE DB Source and provide connection in the Connection Manager. Check the Column Mappings in the mappings section. Click OK. When the package is ...
PAT: A Performance Analysis Tool for MySQL Storage Engine PBXT
PAT: A Performance Analysis Tool for MySQL Storage Engine PBXT. Sunday, August 12, 2007. More explanation on print stacktrace. If defined( i386 ) defined( x86 64 ). Uchar* new fp = (uchar* )*fp;. Fprintf(stderr, "%p n", frame count = sigreturn frame count? Fp SIGRETURN FRAME OFFSET) : *(fp 1) ;. Endif /* defined( 386 ) defined( x86 64 ) */. Fp = new fp;. As suggested by Paul,. If it is a signal frame, its frame OFFSET is different. It is defined by SIGRETURN FRAME OFFSET. New fp = *fp;. Take i386 for exa...
mysqlperformanceandtips.blogspot.com
Mysql Performance and Tips
Mysql Performance and Tips. Thursday, May 23, 2013. Can't create table (errno: 121). When Mysql can't create the table is usually due to FK. 1- make sure you have exact same date types between PK and FK (if you're using unsigned in PK, FK must be unsigned). 2- Check you're not already using same constraint name in the schema. Use info schema to double check. Select table name, referenced table name, constraint name from information schema.referential constraints where constraint schema='your db'. You nee...
MySQL / LAMP Performance Tuning
Learn how the acclaimed Newton Virus was made. An introduction to optimization. Why they happen, and how to reduce them. Make better use of your server hardware. MySQL Performance Tuning Or: How To Optimize And Scale With MySQL / LAMP. Welcome to MySQL Performance Tuning. This site is for people who need to optimize, tune and scale MySQL. Or, more generally speaking, build high performance websites. We focus on getting more from your existing hardware. MySQL / LAMP Performance Tuning. If your site serves...
