sqliteHow do I use SQLite to update or insert data?
SQLite is a popular database engine that is used to store and access data. It is a lightweight and powerful database that is easy to use. In order to update or insert data into a SQLite database, you must first create a connection to the database. This can be done using the sqlite3
module.
Once the connection is established, you can use the cursor
object to execute SQL statements. To update or insert data, you can use the execute
method of the cursor
object.
For example, to insert a new row into a table named users
, you can use the following code:
import sqlite3
# Connect to the database
conn = sqlite3.connect('mydatabase.db')
# Create a cursor
c = conn.cursor()
# Execute the SQL statement
c.execute("INSERT INTO users (name, email) VALUES ('John', '[email protected]')")
# Commit the changes
conn.commit()
The above code will insert a new row into the users
table with the name John
and the email [email protected]
.
To update existing data in the database, you can use the UPDATE
statement. For example, to update the email address of the user John
:
import sqlite3
# Connect to the database
conn = sqlite3.connect('mydatabase.db')
# Create a cursor
c = conn.cursor()
# Execute the SQL statement
c.execute("UPDATE users SET email = '[email protected]' WHERE name = 'John'")
# Commit the changes
conn.commit()
The above code will update the email address of the user John
to [email protected]
.
List of Code Parts
sqlite3
module: used to create a connection to the database.cursor
object: used to execute SQL statements.execute
method: used to update or insert data.INSERT
statement: used to insert new data into the database.UPDATE
statement: used to update existing data in the database.
Relevant Links
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