Sqlite3 Tutorial Query Python Fixed
# Backup database def backup_database(backup_path): backup_conn = sqlite3.connect(backup_path) with backup_conn: conn.backup(backup_conn) backup_conn.close() print(f"Database backed up to backup_path")
def insert_multiple_users(users_list): conn = sqlite3.connect('my_database.db') cursor = conn.cursor()
execute() returns the cursor, which is useful for chaining: sqlite3 tutorial query python fixed
conn.close() return rows
Now, let's connect to the example.db database using Python: If you have a fixed query structure that
cursor.execute('SELECT title, rating FROM books WHERE rating > ?', (4.6,)) first_book = cursor.fetchone() print(first_book) # Output: ('The Pragmatic Programmer', 4.8)
The SQL statement clearly shows what data goes into which column. rating FROM books WHERE rating >
: Always call conn.commit() after a sequence of modifications, or use the connection as a context manager.
This ensures the connection closes even if an error occurs.
If you have a fixed query structure that needs to process a large collection of rows efficiently, use cursor.executemany() . This reduces overhead by sending the batch to the database engine all at once.
print("\n--- User with ID 1 ---") print(get_user_by_id(1))