Python & MySQL - Select Records Example

Select/Read Operation on any database means to fetch some useful information from the database.

Once our database connection is estabpshed, you are ready to make a query into this database. You can use either fetchone() method to fetch single record or fetchall() method to fetch multiple values from a database table.

fetchone() − It fetches the next row of a query result set. A result set is an object that is returned when a cursor object is used to query a table.

fetchall() − It fetches all the rows in a result set. If some rows have already been extracted from the result set, then it retrieves the remaining rows from the result set.

rowcount − This is a read-only attribute and returns the number of rows that were affected by an execute() method.

Syntax

# execute SQL query using execute() method.
cursor.execute(sql)

result = cursor.fetchall()

for record in result:
   print(record)

Example

Try the following example to select records from a table −

Copy and paste the following example as mysql_example.ty −

#!/usr/bin/python

import MySQLdb

# Open database connection
db = MySQLdb.connect("localhost","root","root@123", "TUTORIALS")

# prepare a cursor object using cursor() method
cursor = db.cursor()

sql = "Select * from tutorials_tbl"

# execute SQL query using execute() method.
cursor.execute(sql)

# fetch all records from cursor
result = cursor.fetchall()

# iterate result and print records
for record in result:
   print(record)

# disconnect from server
db.close()

Output

Execute the mysql_example.py script using python and verify the output.

(1,  HTML 5 ,  Robert , datetime.date(2010, 2, 10))
(2,  Java ,  Jupe , datetime.date(2020, 12, 10))
(3,  JQuery ,  Jupe , datetime.date(2020, 5, 10))