ERROR 1049 (42000): Unknown database 'mydatabasename'

Question

I am trying to restore database from .sql file , i have created the database in phpmyadmin and also using the create if not exist command in the .sql file which i am restori

Answer 1

I had the same issue, i run this command on command line and just like you i had added the ';' at the end. Removing it solved the issue. Instead of this

mysql -uroot -pmypassword mydatabase<mydatabase.sql;

try this

mysql -uroot -pmypassword mydatabase<mydatabase.sql

Answer 2

If dump file contains:

CREATE DATABASE mydatabasename;
USE mydatabasename; 

You may just use in CLI:

mysql -uroot –pmypassword < mydatabase.sql

It works.

Answer 3

Open the sql file and comment out the line that tries to create the existing database and remove USE mydatabasename and try again.

Answer 4

Create database which gave error as Unknown database, Login to mysql shell:

sudo mysql -u root -p
create database db_name;

Now try restoring database using .sql file, -p flag will ask for a sql user's password once command is executed.

sudo mysql -u root -p db_name < db_name.sql

Answer 5

Whatever the name of your dump file, it's the content which does matter.

You need to check your mydatabase.sql and find this line :

USE mydatabasename;

This name does matter, and it's the one you must use in your command :

mysql -uroot -pmypassword mydatabasename<mydatabase.sql;

Two options for you :

1. Remove USE mydatabasename; in your dump, and keep using :
   mysql -uroot -pmypassword mydatabase<mydatabase.sql;
2. Change your local database name to fit the one in your SQL dump, and use :
   mysql -uroot -pmypassword mydatabasename<mydatabase.sql;

Answer 6

I found these lines in one of the .sql files

"To connect with a manager that does not use port 3306, you must specify the port number:

$mysqli = new mysqli('127.0.0.0.1','user','password','database','3307');

or, in procedural terms:

$mysqli = mysqli_connect('127.0.0.0.1','user','password','database','3307');"

It resolved the error for me . So i will suggest must use port number while making connection to server to resolve the error 1049(unknown database).