Datenbank Python erstellen
# Create the Database and Tables (Example data):
import sqlite3
conn = sqlite3.connect('test_database')
c = conn.cursor()
c.execute('''
INSERT INTO products (product_id, product_name)
VALUES
(1,'Computer'),
(2,'Printer'),
(3,'Tablet'),
(4,'Desk'),
(5,'Chair')
''')
c.execute('''
INSERT INTO prices (product_id, price)
VALUES
(1,800),
(2,200),
(3,300),
(4,450),
(5,150)
''')
conn.commit()
## ## ## ## ## ## ## ## ##
# Display the results:
import sqlite3
import pandas as pd
conn = sqlite3.connect('test_database')
c = conn.cursor()
c.execute('''
SELECT
a.product_name,
b.price
FROM products a
LEFT JOIN prices b ON a.product_id = b.product_id
''')
df = pd.DataFrame(c.fetchall(), columns=['product_name','price'])
print (df)
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