First, what is Show profile? Is MySQL provides a measure of the resource consumption that can be used to analyze the execution of statements in the current session, which can be used for SQL tuning. By default, the parameter is turned off and the
' latin% ';' latin1% ';Show columns displays the information for each column in a given table , and for views, this statement also works. SHOW COLUMNS from MyDB. mytable; SHOW COLUMNS from MyTable to MyDB;The show create database display is used to
1. Enter Mysqladmin processlist into the Mysql/bin directory;2. Start MySQL and enter show Processlist;If you have SUPER privileges, you can see all the threads, otherwise you will only see the thread that you initiated (this is the thread that the
Show Processlist shows which threads are running, and if you have super privileges, you can see all the threads, otherwise you will only see your own thread (that is, the thread associated with the MySQL account you are using), and if you do not use
Show DATABASES: lists the DATABASES on the mysql Server. Show tables [FROM db_name]: Lists TABLES in a database. Show table status [FROM db_name]: lists the TABLE information of a database. Show columns from tbl_name [FROM db_name]: lists the column
All the following commands are executed in the mysql monitor:
A. show tables or show tables from database_name; // display the names of all tables in the current database
B. show databases; // display the names of all databases in mysql
C. show
The output result of the processlist command shows which threads are running. This command can be used to identify problematic query statements.
1. Enter mysqladmin processlist In the MySQL/bin directory;
2. Start MySQL and enter show
Aborted_clients the number of connections that have been discarded because the client did not properly close the connection already dead. Aborted_connects the number of times the connection to the MySQL server has failed. Binlog_cache_disk_use when
Aborted_clients
Indicates the number of failed connections due to some reason that the client did not close the connection properly. This can happen if the customer does not adjust the mysql_close () function before exiting, or if the
1. View MySQL server configuration informationMysql> Show variables;2. View the various status values running on the MySQL serverMysql> show global status;3, slow query1. mysql> show variables like ‘%slow%‘; 2. +------------------+-------+ 3. |
System LockShow processlistStatus entries in Show Processlist output: 5.1 None of the manuals, or the translation of the problem, are accompanied by 5.5 original description:After createThis occurs when the thread creates a table (including internal
MySQL prompt writing to net resolutionA database has recently been found to have a CPU usage comparison. More than 200%.First look at the database slow log, set slow log 5 seconds, basically no day, no more than 5 seconds statement.Show
You can use the following command to view the current status of a server:
1. Go to the mysql/bin directory and enter mysqladmin extended-status
2. ConnectMysql, Enter show status;
3. If you want to view data, you can
Mysql> show status like 'table %
Show tables or show tables from database_name; // display the names of all tables in the current databaseShow databases; // display the names of all databases in mysqlShow columns from table_name from database_name; or show columns from
The output result of the processlist command shows which threads are running. This command can be used to identify problematic query statements.1. Enter mysqladmin processlist In the mysql/bin directory;2. Start mysql and enter show processlist;If
MySQL has a lot of basic commands, and the show command is also one of them. In many users, the use of the show command is also prone to confusion. This article summarizes the many usage of the show command.1. Show tables or show tables from
Show status provides the server status information (like mysqladmin extended-STATUS ). The output is similar to the following display, although the format and number can be a bit different:
+ -------------------------- + -------- +| Variable_name |
Show processlist shows which threads are running. You can also use the mysqladmin processlist statement to obtain this information. If you have SUPER permission, you can see all the threads. Otherwise, you can only view your own thread (that is, the
The output result of the processlist command shows which threads are running. This command can be used to identify problematic query statements.
1. Enter mysqladmin processlist In the MySQL/bin directory;
2. Start MySQL and enter show
From: http://www.51testing.com/html/96/110296-69546.html
The output result of the processlist command shows which threads are running. This command can be used to identify problematic query statements.
Enter mysqladmin processlist In the MySQL/bin
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