”;
To begin with, the table creation command requires the following details −
- Name of the table
- Name of the fields
- Definitions for each field
Syntax
Here is a generic SQL syntax to create a MySQL table −
CREATE TABLE table_name (column_name column_type);
Now, we will create the following table in the TUTORIALS database.
create table tutorials_tbl( tutorial_id INT NOT NULL AUTO_INCREMENT, tutorial_title VARCHAR(100) NOT NULL, tutorial_author VARCHAR(40) NOT NULL, submission_date DATE, PRIMARY KEY ( tutorial_id ) );
Here, a few items need explanation −
-
Field Attribute NOT NULL is being used because we do not want this field to be NULL. So, if a user will try to create a record with a NULL value, then MySQL will raise an error.
-
Field Attribute AUTO_INCREMENT tells MySQL to go ahead and add the next available number to the id field.
-
Keyword PRIMARY KEY is used to define a column as a primary key. You can use multiple columns separated by a comma to define a primary key.
Creating Tables from Command Prompt
It is easy to create a MySQL table from the mysql> prompt. You will use the SQL command CREATE TABLE to create a table.
Example
Here is an example, which will create tutorials_tbl −
root@host# mysql -u root -p Enter password:******* mysql> use TUTORIALS; Database changed mysql> CREATE TABLE tutorials_tbl( → tutorial_id INT NOT NULL AUTO_INCREMENT, → tutorial_title VARCHAR(100) NOT NULL, → tutorial_author VARCHAR(40) NOT NULL, → submission_date DATE, → PRIMARY KEY ( tutorial_id ) → ); Query OK, 0 rows affected (0.16 sec) mysql>
NOTE − MySQL does not terminate a command until you give a semicolon (;) at the end of SQL command.
Creating Tables Using PHP Script
PHP uses mysqli query() or mysql_query() function to create a MySQL table. This function takes two parameters and returns TRUE on success or FALSE on failure.
Syntax
$mysqli→query($sql,$resultmode)
| Sr.No. | Parameter & Description |
|---|---|
| 1 |
$sql
Required – SQL query to create a MySQL table. |
| 2 |
$resultmode
Optional – Either the constant MYSQLI_USE_RESULT or MYSQLI_STORE_RESULT depending on the desired behavior. By default, MYSQLI_STORE_RESULT is used. |
Example
Try the following example to create a table −
Copy and paste the following example as mysql_example.php −
<html>
<head>
<title>Creating MySQL Table</title>
</head>
<body>
<?php
$dbhost = ''localhost'';
$dbuser = ''root'';
$dbpass = ''root@123'';
$dbname = ''TUTORIALS'';
$mysqli = new mysqli($dbhost, $dbuser, $dbpass, $dbname);
if($mysqli→connect_errno ) {
printf("Connect failed: %s<br />", $mysqli→connect_error);
exit();
}
printf(''Connected successfully.<br />'');
$sql = "CREATE TABLE tutorials_tbl( ".
"tutorial_id INT NOT NULL AUTO_INCREMENT, ".
"tutorial_title VARCHAR(100) NOT NULL, ".
"tutorial_author VARCHAR(40) NOT NULL, ".
"submission_date DATE, ".
"PRIMARY KEY ( tutorial_id )); ";
if ($mysqli→query($sql)) {
printf("Table tutorials_tbl created successfully.<br />");
}
if ($mysqli→errno) {
printf("Could not create table: %s<br />", $mysqli→error);
}
$mysqli→close();
?>
</body>
</html>
Output
Access the mysql_example.php deployed on apache web server and verify the output.
Connected successfully. Table tutorials_tbl created successfully.
”;