Machine Learning Tutorials, Courses and Certifications
Related Articles
Python MySQL Create Table¶
To create a table in MySQL, use the “CREATE TABLE” statement. Make sure you define the name of the database when you create the connection
In [4]:
import mysql.connector
mydb = mysql.connector.connect(
host="localhost",
user="root",
passwd="",
database="itronix"
)
mycursor = mydb.cursor()
mycursor.execute("CREATE TABLE student (name VARCHAR(255), address VARCHAR(255), Phone int)")
Check if Table Exists¶
You can check if a table exist by listing all tables in your database with the “SHOW TABLES” statement:
In [5]:
import mysql.connector
mydb = mysql.connector.connect(
host="localhost",
user="root",
passwd="",
database="itronix"
)
mycursor = mydb.cursor()
mycursor.execute("show tables")
for x in mycursor:
print(x)
Creating Table with Primary Key¶
- When creating a table, you should also create a column with a unique key for each record.
- This can be done by defining a PRIMARY KEY.
- We use the statement “INT AUTO_INCREMENT PRIMARY KEY” which will insert a unique number for each record. Starting at 1, and increased by one for each record.
In [7]:
import mysql.connector
mydb = mysql.connector.connect(
host="localhost",
user="root",
passwd="",
database="itronix"
)
mycursor = mydb.cursor()
mycursor.execute("CREATE TABLE customers (id INT AUTO_INCREMENT PRIMARY KEY, name VARCHAR(255), address VARCHAR(255))")
If the table already exists, use the ALTER TABLE keyword:¶
- mycursor.execute(“ALTER TABLE customers ADD COLUMN id INT AUTO_INCREMENT PRIMARY KEY”)
