{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "7bdfa5dd-9e86-4047-bee1-9bea236c4c81",
   "metadata": {},
   "outputs": [],
   "source": [
    "from mysql.connector import MySQLConnection, Error"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "bf7e4828-9b68-478e-a1b5-9e7a9734c039",
   "metadata": {},
   "outputs": [],
   "source": [
    "def make_connection():\n",
    "    \"\"\"\n",
    "    Make a connection to the school database.\n",
    "    \"\"\"\n",
    "    try:\n",
    "        conn = MySQLConnection(host='localhost',\n",
    "                               database='school',\n",
    "                               user='root',\n",
    "                               password='seekrit')\n",
    "        \n",
    "        if conn.is_connected():\n",
    "            print('Connected to the MySQL database!')\n",
    "            \n",
    "            return conn\n",
    "                \n",
    "    except Error as e:\n",
    "        print('Connection failed.')\n",
    "        print(e)\n",
    "        \n",
    "        return None"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "b823dde9-9c1c-4246-8add-de1f2b6f85a0",
   "metadata": {},
   "outputs": [],
   "source": [
    "conn = make_connection()\n",
    "cursor = conn.cursor()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "f743d22f-6ed0-410f-a015-4a9eb34a3181",
   "metadata": {},
   "outputs": [],
   "source": [
    "sql = \"SELECT * FROM class\"\n",
    "\n",
    "cursor.execute(sql)\n",
    "rows = cursor.fetchall()\n",
    "\n",
    "for row in rows:\n",
    "    print(row)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "ae935db9-29cd-4162-8367-f5f46023eb17",
   "metadata": {},
   "outputs": [],
   "source": [
    "sql = ( \"\"\"\n",
    "        SELECT student.first, student.last, subject \n",
    "        FROM student, teacher, class, takes \n",
    "        WHERE teacher.last = 'Flynn' \n",
    "        AND teacher.first = 'Mabel' \n",
    "        AND teacher_id = teacher.id \n",
    "        AND code = class_code \n",
    "        AND student_id = student.id \n",
    "        ORDER BY subject, student.last\n",
    "        \"\"\"\n",
    "      )\n",
    "\n",
    "cursor.execute(sql)\n",
    "rows = cursor.fetchall()\n",
    "\n",
    "for row in rows:\n",
    "    print(row)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "9816ccbb-4410-4768-99da-83fb65a62938",
   "metadata": {},
   "outputs": [],
   "source": [
    "cursor.close()\n",
    "conn.close()"
   ]
  }
 ],
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