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 | $sqlRequired – SQL query to create a MySQL table. |
2 | $resultmodeOptional – 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.
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