Python Sqlite - Insert Data

Quiz

You can add new rows to an existing table of SQLite using the INSERT INTO statement. In this, you need to specify the name of the table, column names, and values (in the same order as column names).

Syntax

Following is the recommended syntax of the INSERT statement −

INSERT INTO TABLE_NAME (column1, column2, column3,...columnN)
VALUES (value1, value2, value3,...valueN);

Where, column1, column2, column3,.. are the names of the columns of a table and value1, value2, value3,... are the values you need to insert into the table.

Example

Assume we have created a table with name CRICKETERS using the CREATE TABLE statement as shown below −

sqlite> CREATE TABLE CRICKETERS (
   First_Name VARCHAR(255),
   Last_Name VARCHAR(255),
   Age int,
   Place_Of_Birth VARCHAR(255),
   Country VARCHAR(255)
);
sqlite>

Following PostgreSQL statement inserts a row in the above created table.

sqlite> insert into CRICKETERS 
   (First_Name, Last_Name, Age, Place_Of_Birth, Country) values
   ('Shikhar', 'Dhawan', 33, 'Delhi', 'India');
sqlite>

While inserting records using the INSERT INTO statement, if you skip any columns names, this record will be inserted leaving empty spaces at columns which you have skipped.

sqlite> insert into CRICKETERS 
   (First_Name, Last_Name, Country) values 
   ('Jonathan', 'Trott', 'SouthAfrica');
sqlite>

You can also insert records into a table without specifying the column names, if the order of values you pass is same as their respective column names in the table.

sqlite> insert into CRICKETERS values('Kumara', 'Sangakkara', 41, 'Matale', 'Srilanka');
sqlite> insert into CRICKETERS values('Virat', 'Kohli', 30, 'Delhi', 'India');
sqlite> insert into CRICKETERS values('Rohit', 'Sharma', 32, 'Nagpur', 'India');
sqlite>

After inserting the records into a table you can verify its contents using the SELECT statement as shown below −

sqlite> select * from cricketers;
Shikhar  | Dhawan     | 33 | Delhi  | India
Jonathan | Trott      |    |        | SouthAfrica
Kumara   | Sangakkara | 41 | Matale | Srilanka
Virat    | Kohli      | 30 | Delhi  | India
Rohit    | Sharma     | 32 | Nagpur | India
sqlite>

Example - Inserting data using python

To add records to an existing table in SQLite database −

Import sqlite3 package.
Create a connection object using the connect() method by passing the name of the database as a parameter to it.
The cursor() method returns a cursor object using which you can communicate with SQLite3. Create a cursor object by invoking the cursor() object on the (above created) Connection object.
Then, invoke the execute() method on the cursor object, by passing an INSERT statement as a parameter to it.

Following python example inserts records into to a table named EMPLOYEE −

main.py

import sqlite3

#Connecting to sqlite
conn = sqlite3.connect('example.db')

#Creating a cursor object using the cursor() method
cursor = conn.cursor()

# Preparing SQL queries to INSERT a record into the database.
cursor.execute('''INSERT INTO EMPLOYEE(
   FIRST_NAME, LAST_NAME, AGE, SEX, INCOME) VALUES 
   ('Ramya', 'Rama Priya', 27, 'F', 9000)''')

cursor.execute('''INSERT INTO EMPLOYEE(
   FIRST_NAME, LAST_NAME, AGE, SEX, INCOME) VALUES 
   ('Vinay', 'Battacharya', 20, 'M', 6000)''')

cursor.execute('''INSERT INTO EMPLOYEE(
   FIRST_NAME, LAST_NAME, AGE, SEX, INCOME) VALUES 
   ('Sharukh', 'Sheik', 25, 'M', 8300)''')

cursor.execute('''INSERT INTO EMPLOYEE(
   FIRST_NAME, LAST_NAME, AGE, SEX, INCOME) VALUES 
   ('Sarmista', 'Sharma', 26, 'F', 10000)''')

cursor.execute('''INSERT INTO EMPLOYEE(
   FIRST_NAME, LAST_NAME, AGE, SEX, INCOME) VALUES 
   ('Tripthi', 'Mishra', 24, 'F', 6000)''')

# Commit your changes in the database
conn.commit()
print("Records inserted........")

# Closing the connection
conn.close()

Output

Records inserted........

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