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What is no database selected Error in MySQL?

What is no database selected Error in MySQL?

The error no database selected frequently occurs in MySQL when you perform a statement without selecting a database first. You need to replace [database_name] with the name of a database that exists in your MySQL server. You need to add your database name after the -p option and before the < symbol.

How do I fix PHP connection error?

PHP mysqli_connect_error() function returns an string value representing the description of the error from the last connection call, incase of a failure. If the connection was successful this function returns Null.

What is the correct way to connect to a MySQL database PHP?

  1. Create MySQL Database at the Localhost. Create Database. Create a Folder in htdocs. Create Database Connection File In PHP.
  2. Create MySQL Database at Cloudways Server. Create Database Connection. MySQLi Procedural Query.
  3. Remote MySQL.
  4. Top MySQL Management tools. MySQL Workbench. Navicat For MySQL.
  5. Conclusion.

How can I get MySQL error code in PHP?

To get the error message we have to use another function mysqli_error() to print the error message returned by MySQL database after executing the query. Here it is how to print the error message. echo mysqli_error(); The above line will print the error returned by mysql database if the query fails to execute.

How do I fix error no database selected?

Here is what I did to fix this issue:

  1. Create new database.
  2. Use it by use command.
  3. Try again.

How do I fix an unknown database?

This type of error occurs if you select any database that does not exist in MySQL. Let us first display the error of unknown database in JDBC. To remove this type of error, just go to MySQL command line and show all database names and use the chosen one from there i.e. the database which really exist.

Which function detects error during connection with database server in PHP?

The connect_error / mysqli_connect_error() function returns the error description from the last connection error, if any.

How can I close database connection in PHP?

To close the connection in mysql database we use php function mysqli_close() which disconnect from database. It require a parameter which is a connection returned by the mysql_connect function. Syntax: mysqli_close(conn);

How can I get database error in PHP?

2 Answers. Just simply add or die(mysqli_error($db)); at the end of your query, this will print the mysqli error.

How do I find MySQL errors?

Introduction to MySQL SHOW ERRORS statement

  1. SHOW ERRORS; To limit the number of errors to return, you use the SHOW ERRORS LIMIT statement:
  2. SHOW ERRORS [LIMIT [offset,] row_count];
  4. SELECT @@error_count;
  5. SELECT id FROM products;
  7. SELECT @@error_count;

How to find out a database name in MySQL?

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    What is the difference between mysql, mysqli and PDO?

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