Error 1046 No database Selected, how to resolve?

Question

Error SQL query:

--
-- Database: `work`
--
-- --------------------------------------------------------
--
-- Table structure for table `administrators`
--
CREATE TABLE IF NOT EXISTS `administrators` (

`user_id` varchar( 30 ) NOT NULL ,
`password` varchar( 30 ) NOT NULL ) ENGINE = InnoDB DEFAULT CHARSET = latin1;

MySQL said:

#1046 - No database selected

need some help here.

Answer 1

You need to tell MySQL which database to use:

USE database_name;

before you create a table.

In case the database does not exist, you need to create it as:

CREATE DATABASE database_name;

followed by:

USE database_name;

Answer 2

您还可以告诉 MySQL 使用哪个数据库（如果您已经创建了它）：

 mysql -u example_user -p --database=example < ./example.sql

Answer 3

I faced the same error when I tried to import a database created from before. Here is what I did to fix this issue:

1- Create new database

2- Use it by use command

3- Try again

This works for me.

Answer 4

If you're trying to do this via the command line...

If you're trying to run the CREATE TABLE statement from the command line interface, you need to specify the database you're working in before executing the query:

USE your_database;

Here's the documentation .

If you're trying to do this via MySQL Workbench...

...you need to select the appropriate database/catalog in the drop down menu found above the :Object Browser: tab. You can specify the default schema/database/catalog for the connection - click the "Manage Connections" options under the SQL Development heading of the Workbench splash screen.

Addendum

This all assumes there's a database you want to create the table inside of - if not, you need to create the database before anything else:

CREATE DATABASE your_database;

Answer 5

If you are doing this through phpMyAdmin:

• I'm assuming you already Created a new MySQL Database on Live Site (by live site I mean the company your hosting with (in my case Bluehost)).

• Go to phpMyAdmin on live site - log in to the database you just created.

• Now IMPORTANT! Before clicking the "import" option on the top bar, select your database on the left side of the page (grey bar, on the top has PHP Myadmin written, below it two options:information_schema and name of database you just logged into.

• once you click the database you just created/logged into it will show you that database and then click the import option.

That did the trick for me. Really hope that helps

Answer 6

For MySQL Workbench

1. Select database from Schemas tab by right mouse clicking.
2. Set database as Default Schema

Answer 7

• Edit your SQL file using Notepad or Notepad++
• add the following 2 line:

CREATE DATABASE NAME; USE NAME;

Answer 8

Assuming you are using the command line:

1. Find Database

show databases;

2. Select a database from the list

eg USE classicmodels; and you should be off to the races! (Obviously, you'll have to use the correctly named database in your list.

Why is this error occurring?

Mysql requires you to select the particular database you are working on. I presume it is a design decision they made: it avoids a lot of potential problems: eg it is entirely possible, for you to use the same table names across multiple databases eg a users table. In order to avoid these types of issues, they probably thought: "let's make users select the database they want".

Answer 9

If importing a database, you need to create one first with the same name, then select it and then IMPORT the existing database to it.

Hope it works for you!

Answer 10

be careful about blank passwords

mysqldump [options] -p '' --databases database_name

will ask for a password and complain with mysqldump: Got error: 1046: "No database selected" when selecting the database

the problem is that the -p option requires that there be no space between -p and the password.

mysqldump [options] -p'' --databases database_name

solved the problem (quotes are not needed anymore).

Answer 11

Check you have created the database first which you want.

If you have not created the dataBase you have to fire this query:

CREATE DATABASE data_base_name

If you have already created the database then you can simply fire this query and you will be able to create table on your database:

CREATE TABLE `data_base_name`.`table_name` (
 _id int not null,
 LastName varchar(255) NOT NULL,
 FirstName varchar(255),
 Age int,
 PRIMARY KEY (_id)
);

Answer 12

quoting ivan n : "If importing a database, you need to create one first with the same name, then select it and then IMPORT the existing database to it. Hope it works for you!"

These are the steps: Create a Database, for instance my_db1, utf8_general_ci. Then click to go inside this database. Then click "import", and select the database: my_db1.sql

That should be all.

Answer 13

first select database : USE db_name

then creat table:CREATE TABLE tb_name ( id int, name varchar(255), salary int, city varchar(255) );

this for mysql 5.5 version syntax

Answer 14

I'm late i think :] soory,

If you are here like me searching for the solution when this error occurs with mysqldump instead of mysql, try this solution that i found on a german website out there by chance, so i wanted to share with homeless people who got headaches like me.

So the problem occurs because the lack -databases parameter before the database name

So your command must look like this:

mysqldump -pdbpass -udbuser --databases dbname

Another cause of the problem in my case was that i'm developping on local and the root user doesn't have a password, so in this case you must use --password= instead of -pdbpass , so my final command was:

mysqldump -udbuser --password= --databases dbname

---

Link to the complete thread (in German) : https://marius.bloggt-in-braunschweig.de/2016/04/29/solution-mysqldump-no-database-selected-when-selecting-the-database/

Answer 15

Solution with an Example

• Error 1046 occurs when we miss to connect our table with a database. In this case, we don't have any database and that's why at first we will create a new database and then will instruct to use that database for the created table.

# At first you have to create Database 
CREATE DATABASE student_sql;

# Next, specify the database to use
USE student_sql;

# Demo: create a table 
CREATE TABLE student_table(
    student_id INT PRIMARY KEY,
    name VARCHAR(20),
    major VARCHAR(20)
);

# Describe the table 
describe student_table;

Answer 16

Although this is a pretty old thread, I just found something out. I created a new database, then added a user, and finally went to use phpMyAdmin to upload the .sql file. total failure. The system doesn't recognize which DB I'm aiming at...

When I start fresh WITHOUT first attaching a new user, and then perform the same phpMyAdmin import, it works fine.

Answer 17

只是想补充一下：如果您在实时站点上的 mySQL 中创建数据库，然后进入 PHPMyAdmin 并且数据库没有显示 - 注销 cPanel 然后重新登录，打开 PHPMyAdmin，它现在应该在那里。

Answer 18

为了增加安全性，当在同一个脚本中处理多个 DB 时，您可以在查询中指定 DB，例如“create table my_awesome_db.really_cool_table...”。

Answer 19

In Amazon RDS, merely writing use my-favorite-database does not work if that database's name includes dashes. Furthermore, none of the following work, either:

use "my-favorite-database"
use `my-favorite-database`
use 'my-favorite-database'

Just click the "Change Database" button, and voilà.

Answer 20

jst在mysql中创建一个新数据库。选择那个新数据库。（如果你现在在顶部使用mysql phpmyadmin，它就像'服务器： ...... * >>数据库） 。现在去导入选项卡选择文件。导入！