2023年11月9日 · To specify password in command line, you set --password=<pass_goes_here> to use database via command line, you put in mysql -u <user> -p <database_name> this way the -p means that mysql client will prompt for password input and not read it from command line

2019年2月3日 · database() is an information function provided by MySQL to return the name of the current database. It can be used anywhere a string constant would be expected. MySQL does not require a from clause, so a select is a complete query that returns one row -- the values calculated in the select.

2023年6月22日 · One way to connect to MySQL directly using proper MySQL username and password is: mysql --user=root --password=mypass Here, root is the MySQL username mypass is the MySQL user password This is useful if you have a blank password. For example, if you have MySQL user called root with an empty password, just use . mysql --user=root --password=

2022年10月26日 · select database() from dual; That said, it is perhaps important to note, that while FROM DUAL does not actually do anything, it is valid MySQL syntax. From a strict perspective, including braces in a single line conditional in JavaScript also does not do anything , but it is still a valid practice.

2013年8月28日 · mulitiple database select php mysql. 2. How do you SELECT from two databases simultaneously? 0.

DELIMITER $$ CREATE PROCEDURE `MultipleSchemaQuery`() BEGIN declare scName varchar(250); declare q varchar(2000); DROP TABLE IF EXISTS ResultSet; create temporary table ResultSet ( option_value varchar(200) ); DROP TABLE IF EXISTS MySchemaNames; create temporary table MySchemaNames ( schemaName varchar(250) ); insert into …

2017年5月29日 · You can try this query. Suppose the database name schoolmanagementsystem, table name student, and table columns name are student_id, student_first_name, and student_last_name. So you can create a table (student) in a particular database (schoolmanagementsystem) following this way.

2009年11月14日 · If you use MySQL Workbench, you can check the database size as follows: Open MySQL Workbench and connect to your MySQL server. Go to the "Navigator" pane on the left. Right-click on the database you want to check. Select "Schema Inspector." The "Schema Inspector" window will show various details, including the estimated size of the database.

2022年11月7日 · At the mysql prompt, do one of the following steps: To give the user access to the database from any host, type the following command: grant select on database_name.* to 'read-only_user_name'@'%' identified by 'password'; If the collector will be installed on the same host as the database, type the following command:

2013年9月25日 · why you dont just dump the mysql database but with extension when you run without --single-transaction you will interrupt the connection to other clients: mysqldump --host=hostname.de --port=0000 --user=username --password=password --single-transaction --skip-add-locks --skip-lock-tables --default-character-set=utf8 datenbankname ...