Sqlite3 Tutorial Query Python Fixed Instant

SQLite3 Tutorial: Mastering Parameterized Queries in Python

Query 5: Deleting Rows

Delete the row where the id column is 3:

cursor.execute('DELETE FROM users WHERE id = ?', (3,))
conn.commit()
cursor.execute('SELECT * FROM users')
rows = cursor.fetchall()
for row in rows:
    print(row)

Output:

(1, 'John Doe', 'john@example.com')
(2, 'Jane Doe', 'jane2@example.com')

Insert posts

def insert_post(user_id, title, content): cursor.execute(''' INSERT INTO posts (user_id, title, content) VALUES (?, ?, ?) ''', (user_id, title, content)) conn.commit() sqlite3 tutorial query python fixed

posts_data = [ (1, "First Post", "This is my first post!"), (1, "Second Post", "Learning SQLite3 with Python"), (2, "Hello World", "Just saying hello"), (3, "Database Tutorial", "SQLite3 is awesome!") ] Output: (1, 'John Doe', 'john@example

for post in posts_data: insert_post(*post) Insert posts def insert_post(user_id

5. Parameterized Queries – The ONLY Safe Way

Never use f-strings or % to insert variables into SQL. You risk SQL injection. Always use ? placeholders.