Simple example of mysql show operation
- 2021-11-30 01:51:13
- OfStack
This article illustrates the mysql show operation. Share it for your reference, as follows:
SHOW CHARACTER SET
Displays all available character sets
SHOW CHARACTER SET;
SHOW CHARACTER SET LIKE 'latin%';
SHOW COLLATION
Output includes all available character sets
SHOW COLLATION;
SHOW COLLATION LIKE 'latin1%';
SHOW COLUMNS
The information of each column displayed in a given table, and this statement also works for views.
SHOW COLUMNS FROM mydb.mytable;
SHOW COLUMNS FROM mytable FROM mydb;
SHOW CREATE DATABASE
Displays the method used to create a given database
CREATE DATABASE
Statement. You can also use the
SHOW CREATE SCHEMA
.
SHOW CREATE DATABASE test;
SHOW CREATE DATABASE test\G;
SHOW CREATE TABLE
Shows the sql statement for creating a table
SHOW CREATE TABLE java;
SHOW CREATE TABLE java\G;
SHOW DATABASES
SHOW DATABASES can enumerate databases on the MySQL server host. You can also use the
mysqlshow
Command to get this list. You can only see databases for which you have certain permissions unless you have global
SHOW DATABASES
Permission.
SHOW DATABASES;
SHOW ENGINE
SHOW ENGINE displays log or status information for the storage engine. The following statements are currently supported:
SHOW ENGINE BDB LOGS;
SHOW ENGINE INNODB STATUS;
SHOW ENGINES
SHOW ENGINES displays the status information of the storage engine. This statement is useful for checking whether a storage engine is supported, or for seeing what the default engine is.
SHOW ENGINES;
SHOW ENGINES\G;
SHOW ERRORS
This statement displays errors only, not errors, warnings, and attention at the same time.
SHOW COUNT(*) ERRORS;
SHOW ERRORS;
SHOW GRANTS
View related permissions
SHOW GRANTS FOR user;
SHOW GRANTS FOR CURRENT_USER;
SHOW GRANTS FOR CURRENT_USER();
SHOW INDEX
SHOW INDEX returns table index information.
SHOW COLLATION;
SHOW COLLATION LIKE 'latin1%';
SHOW INNODB STATUS (mysql5.6 will report an error)
View server information and locate problems
This is
SHOW ENGINE INNODB STATUS
Synonyms of, but disapprove of the use.
SHOW OPEN TABLES
Enumerates the non-TEMPORARY tables currently open in the table cache.
SHOW COLLATION;
SHOW COLLATION LIKE 'latin1%';
SHOW PRIVILEGES
Displays a list of system permissions supported by the MySQL server. The exact output depends on the version of your server
SHOW COLLATION;
SHOW COLLATION LIKE 'latin1%';
SHOW PROCESSLIST
Displays which threads are running, commonly used
show full processlist
To see the number of mysql connections. You can also use the
mysqladmin processlist
Statement to get this information. If you have SUPER permissions, you can see all threads. Otherwise, you can only see your own thread
SHOW STATUS
Provides server status information. This information can also be used using the
mysqladmin extended-status
Command acquisition.
SHOW STATUS;
SHOW TABLE STATUS
SHOW TABLE STATUS is similar in nature to SHOW TABLE, but can provide a great deal of information for each table. You can also use the
mysqlshow --status db_name
Command to get this list.
This statement also displays view information.
SHOW COLLATION;
SHOW COLLATION LIKE 'latin1%';
SHOW TABLES
SHOW TABLES enumerates non-TEMPORARY tables in a given database. You can also use the
mysqlshow db_name
Command to get this list.
SHOW COLLATION;
SHOW COLLATION LIKE 'latin1%';
SHOW TRIGGERS
SHOW TRIGGERS lists the triggers currently defined by the MySQL server.
SHOW COLLATION;
SHOW COLLATION LIKE 'latin1%';
SHOW VARIABLES
View variables about configuration
SHOW COLLATION;
SHOW COLLATION LIKE 'latin1%';
SHOW WARNINGS
Displays error, warning, and attention messages caused by the last message-generating statement. If the last statement using the table did not generate a message, nothing is displayed.
SHOW CREATE SCHEMA0
Is its related statement, showing only errors.
SHOW COUNT(*) WARNINGS;
SHOW WARNINGS;
More readers interested in MySQL can check out the topics on this site: "MySQL Query Skills Encyclopedia", "MySQL Transaction Operation Skills Encyclopedia", "MySQL Stored Procedure Skills Encyclopedia", "MySQL Database Lock Skills Encyclopedia" and "MySQL Common Functions Encyclopedia"
I hope this article is helpful to everyone's MySQL database.