Which mysql command is used to select database?

SELECT Database is used in MySQL to select a particular database to work with. This query is used when multiple databases are available with MySQL Server.

You can use SQL command USE to select a particular database.

Syntax:

Example:

Let's take an example to use a database name "customers".

It will look like this:

Which mysql command is used to select database?

Note: All the database names, table names and table fields name are case sensitive. You must have to use proper names while giving any SQL command.



Which mysql command is used to select database?
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Which mysql command is used to select database?
Which mysql command is used to select database?
Which mysql command is used to select database?





MySQL – Select DATABASE

MySQL Server can contain multiple databases and can serve multiple clients simultaneously. So, when a client connects to or opens a mysql command prompt, a database (from existing multiple databases) should be selected to run the SQL queries or operations. In this tutorial, we shall learn to select a database in MySQL, from multiple databases.

Syntax – Select Database in MySQL

Following is the syntax of SQL query to select a database in MySQL in mysql command prompt.

USE database_name

database_name : Name of the database to use and run the queries upon.

Now we shall see list of existing databases in MySQL Server and select one of them to use with SQL queries or operations.

Which mysql command is used to select database?
Select a DATABASE in MySQL – USE DATABASE;

USE db2; selects database db2 for any subsequent queries on a database.

Change or switch DATABASE in MySQL

To change or switch DATABASE, run the same USE database_name query with the new database name that you wish to work on. In the example shown above, USE db3; changes the database, from db2 to db3, on which your SQL queries effect on.

3.3.1 Creating and Selecting a Database

If the administrator creates your database for you when setting up your permissions, you can begin using it. Otherwise, you need to create it yourself:

mysql> CREATE DATABASE menagerie;

Under Unix, database names are case-sensitive (unlike SQL keywords), so you must always refer to your database as menagerie, not as Menagerie, MENAGERIE, or some other variant. This is also true for table names. (Under Windows, this restriction does not apply, although you must refer to databases and tables using the same lettercase throughout a given query. However, for a variety of reasons, the recommended best practice is always to use the same lettercase that was used when the database was created.)

Note

If you get an error such as ERROR 1044 (42000): Access denied for user 'micah'@'localhost' to database 'menagerie' when attempting to create a database, this means that your user account does not have the necessary privileges to do so. Discuss this with the administrator or see Section 6.2, “Access Control and Account Management”.

Creating a database does not select it for use; you must do that explicitly. To make menagerie the current database, use this statement:

mysql> USE menagerie
Database changed

Your database needs to be created only once, but you must select it for use each time you begin a mysql session. You can do this by issuing a USE statement as shown in the example. Alternatively, you can select the database on the command line when you invoke mysql. Just specify its name after any connection parameters that you might need to provide. For example:

$> mysql -h host -u user -p menagerie
Enter password: ********

Important

menagerie in the command just shown is not your password. If you want to supply your password on the command line after the -p option, you must do so with no intervening space (for example, as -ppassword, not as -p password). However, putting your password on the command line is not recommended, because doing so exposes it to snooping by other users logged in on your machine.

Note

You can see at any time which database is currently selected using SELECT DATABASE().


How do I select a database in MySQL?

Syntax – Select Database in MySQL Following is the syntax of SQL query to select a database in MySQL in mysql command prompt. database_name : Name of the database to use and run the queries upon. Now we shall see list of existing databases in MySQL Server and select one of them to use with SQL queries or operations.

What is the command for selecting a database?

The SELECT statement is used to select data from a database.

How do I select a database in MySQL Linux?

How to Select a MySQL Database on Linux via Command Line.
Step 1: Log into the MySQL Server..
Step 2: View Selected Database in MySQL..
Step 3: Select a Database in MySQL..