MySQL Create DB

A database holds one or multiple tables.

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Create a Database

The CREATE DATABASE statement is used to create a database in MySQL.

Syntax

CREATE DATABASE database_name 

To learn more about SQL, please visit our SQL tutorial.

To get PHP to execute the statement above we must use the mysql_query() function. This function is used to send a query or command to a MySQL connection.

Example

The following example creates a database called "my_db":

<?php

$con = mysql_connect("localhost","peter","abc123");
if (!$con)
{
  die('Could not connect: ' . mysql_error());
}
if (mysql_query("CREATE DATABASE my_db",$con))
{
  echo "Database created";
}
else
{
 echo "Error creating database: " . mysql_error();
}
mysql_close($con);

?>

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Create a Table

The CREATE TABLE statement is used to create a table in MySQL.

Syntax

CREATE TABLE table_name
(
  column_name1 data_type,
  column_name2 data_type,
  column_name3 data_type,
  ....  ) 

To learn more about SQL, please visit our SQL tutorial.
We must add the CREATE TABLE statement to the mysql_query() function to execute the command.

Example

The following example creates a table named "Persons", with three columns. The column names will be "FirstName", "LastName" and "Age":

<?php
$con = mysql_connect("localhost","peter","abc123");
if (!$con)
{
 die('Could not connect: ' . mysql_error());
}

// Create database
if (mysql_query("CREATE DATABASE my_db",$con))
{
echo "Database created";
}
else
{
  echo "Error creating database: " . mysql_error();
}

// Create table
mysql_select_db("my_db", $con);
$sql = "CREATE TABLE Persons
(
FirstName varchar(15),
LastName varchar(15),
Age int
)";

// Execute query
mysql_query($sql,$con);
mysql_close($con);

?>

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Important:A database must be selected before a table can be created. The database is selected with the mysql_select_db() function.

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Note:When you create a database field of type varchar, you must specify the maximum length of the field, e.g. varchar(15).


The data type specifies what type of data the column can hold. For a complete reference of all the data types available in MySQL, go to complete Data Types reference.