Objective and Prerequisites

Objective: This segment introduces the two different implementations of how to create a database and table in MySQL using Python (one using mysql-connector and another using PyMySQL).

Prerequisites: PyMySQL and CSV modules are installed, and MySQL Database is up and running in the background. If not, then refer to the Python Database Connectivity segment in sequence.

Start MySQL
kodingwindow@kw:~$ sudo mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 10
Server version: 8.0.36-2ubuntu3 (Ubuntu)

Copyright (c) 2000, 2024, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> SHOW DATABASES;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
5 rows in set (0.00 sec)
Python MySQL to connect, create a database, and table using mysql-connector
In the following program, we are creating a database and table. If a database DB already exists in MySQL, then the existing DB database will get deleted, and the new database DB will get created.
kw.py
import mysql.connector

db=mysql.connector.connect(host="localhost",user="root",passwd="kodingwindow")
print("Connection Established")
cursor=db.cursor()

try:
    cursor.execute("CREATE DATABASE DB")
except:
    cursor.execute("DROP DATABASE DB")
    cursor.execute("CREATE DATABASE DB")
print("Database DB created successfully")

cursor.execute("SHOW DATABASES")
for dbs in cursor:
    print(dbs)
    
db.close()
Output
kodingwindow@kw:~$ python3 kw.py
Connection Established
Database DB created successfully
('DB',)
('information_schema',)
('mysql',)
('performance_schema',)
('sys',)
MySQL Instance
mysql> SHOW DATABASES;
+--------------------+
| Database           |
+--------------------+
| DB                 |
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
5 rows in set (0.00 sec)

mysql> USE DB;
Database changed

mysql> SHOW TABLES;
Empty set (0.00 sec)
Python MySQL to connect, create a database, and table using PyMySQL
kw.py
import pymysql

db=pymysql.connect(host='localhost', user='root', password='kodingwindow')
print("Connection Established")
cursor=db.cursor()

dbname="DB"

try:
    cursor.execute("CREATE DATABASE {}".format(dbname))
except:
    cursor.execute("DROP DATABASE {}".format(dbname))
    cursor.execute("CREATE DATABASE {}".format(dbname))

print("Database {} created successfully".format(dbname))

cursor.execute("SHOW DATABASES")
for dbs in cursor:
    print(dbs)

cursor.execute("USE {}".format(dbname))

tablename="holders"

cursor.execute("CREATE TABLE {}(account_no BIGINT PRIMARY KEY, name VARCHAR(30) NOT NULL, bank VARCHAR(10), amount BIGINT NOT NULL)".format(tablename))
print("\nTable {} created successfully".format(tablename))

cursor.execute("SHOW TABLES")
for dbs in cursor:
    print(dbs)

db.close()
Output
kodingwindow@kw:~$ python3 kw.py
Connection Established
Database DB created successfully
('DB',)
('information_schema',)
('mysql',)
('performance_schema',)
('sys',)

Table holders created successfully
('holders',)
MySQL Instance
mysql> SHOW DATABASES;
+--------------------+
| Database           |
+--------------------+
| DB                 |
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
5 rows in set (0.00 sec)

mysql> USE DB;
Database changed

mysql> SHOW TABLES;
+--------------+
| Tables_in_DB |
+--------------+
| holders      |
+--------------+
1 row in set (0.00 sec)

mysql> DESC holders;
+------------+-------------+------+-----+---------+-------+
| Field      | Type        | Null | Key | Default | Extra |
+------------+-------------+------+-----+---------+-------+
| account_no | bigint(20)  | NO   | PRI | NULL    |       |
| name       | varchar(30) | NO   |     | NULL    |       |
| bank       | varchar(10) | YES  |     | NULL    |       |
| amount     | bigint(20)  | NO   |     | NULL    |       |
+------------+-------------+------+-----+---------+-------+
4 rows in set (0.01 sec)
Comments and Reactions
What Next?
Python MySQL to insert and retrieve the records from a table Python MySQL to update the table records Python MongoDB to connect, create database, and collection
Advertisement