How to Fix MySQL Error 1046: No Database Selected?

Troubleshooting MySQL Error 1046: No Database Selected

Encountering the "Error 1046: No Database Selected" message in MySQL? This error arises when you try to run an SQL command without first specifying the database. The solution is straightforward: select the correct database before executing your query.

For instance, when creating a table via the command line, you must initially select the database using the USE command:

<code class="language-sql">USE mydatabase;</code>

Replace mydatabase with your database's name. Following this, your table creation query will execute successfully:

<code class="language-sql">CREATE TABLE IF NOT EXISTS `mytable` (
  `column1` VARCHAR(30) NOT NULL,
  `column2` VARCHAR(30) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;</code>

If the database doesn't yet exist, create it first with CREATE DATABASE, then switch to it using USE:

<code class="language-sql">CREATE DATABASE mydatabase;
USE mydatabase;</code>

Remember to substitute mydatabase and mytable with your desired database and table names. This ensures your SQL commands target the correct database and prevent the "No Database Selected" error.

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