Select database query in MySQL

Selecting MySQL Database
October 22, 2020 – 11:25 am
How to join three tables in SQL query – MySQL Example

It is very simple to select a database from the mysql> prompt. You can use the SQL command use to select a database.


Here is an example to select a database called TUTORIALS

[root@host]# mysql -u root -p Enter password:****** mysql> use TUTORIALS; Database changed mysql>

Now, you have selected the TUTORIALS database and all the subsequent operations will be performed on the TUTORIALS database.

NOTE − All the database names, table names, table fields name are case sensitive. So you would have to use the proper names while giving any SQL command.

Selecting a MySQL Database Using PHP Script

PHP provides function mysql_select_db to select a database. It returns TRUE on success or FALSE on failure.


bool mysql_select_db( db_name, connection );

S. No. Parameter & Description
db_name Required − MySQL Database name to be selected
connection Optional − if not specified, then the last opened connection by mysql_connect will be used.
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