python basic mysql CRUD functionalities

crud.sql

-- phpMyAdmin SQL Dump
-- version 5.2.0
-- https://www.phpmyadmin.net/
--
-- Host: localhost
-- Generation Time: Jul 29, 2022 at 03:26 PM
-- Server version: 10.4.24-MariaDB
-- PHP Version: 8.0.19

SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";
START TRANSACTION;
SET time_zone = "+00:00";


/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8mb4 */;

--
-- Database: `db_test`
--

-- --------------------------------------------------------

--
-- Table structure for table `test_queries`
--

CREATE TABLE `test_queries` (
  `tid` int(11) NOT NULL,
  `test_notes` text DEFAULT NULL,
  `on_date` datetime DEFAULT current_timestamp()
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

--
-- Dumping data for table `test_queries`
--

INSERT INTO `test_queries` (`tid`, `test_notes`, `on_date`) VALUES
(1, 'updatecomplete!!', '2022-07-13 13:34:35'),
(2, 'asiphdpihaspidh paihsdpiapsihd piah spidhpiahsdpi hapishdpiahsd hai', '2022-07-13 13:34:35'),
(7, 'working from python', '2022-07-29 18:33:12');

--
-- Indexes for dumped tables
--

--
-- Indexes for table `test_queries`
--
ALTER TABLE `test_queries`
  ADD PRIMARY KEY (`tid`);

--
-- AUTO_INCREMENT for dumped tables
--

--
-- AUTO_INCREMENT for table `test_queries`
--
ALTER TABLE `test_queries`
  MODIFY `tid` int(11) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=9;
COMMIT;

/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;

py_crud.py

import pymysql

connection = pymysql.connect(host="localhost", user="root", passwd="", database="db_test")

cursor = connection.cursor(pymysql.cursors.DictCursor)


#fetch data
sql = "SELECT * FROM test_queries"
cursor.execute(sql)
for row in cursor:
    print(row['test_notes'])


print("-------")

#insert data
sql = "INSERT INTO test_queries(test_notes) VALUES(%s)"
cursor.execute(sql,('working from python test2'))
connection.commit()
print("here we go again")

print("")

def fetchData():
    sql = "SELECT * FROM test_queries ORDER BY on_date DESC"
    cursor.execute(sql)
    row_count = cursor.rowcount #rowcount
    if row_count > 0:
        for row in cursor:
            print(row['test_notes'])
    else:
        print("no data uploaded yet!")

#row count 
#print("row count:", cursor.rowcount)


#update 
sql = "UPDATE test_queries SET test_notes='updatecomplete!!' WHERE tid = 1"
cursor.execute(sql)
connection.commit()
print("")
fetchData()

#delete 
sql = "DELETE FROM test_queries WHERE tid = 8"
cursor.execute(sql)
connection.commit()
print("")
fetchData()