diff --git a/lab-sql-9.ipynb b/lab-sql-9.ipynb
new file mode 100644
index 0000000..9ff620b
--- /dev/null
+++ b/lab-sql-9.ipynb
@@ -0,0 +1,388 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "id": "de221430",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "'\\n!pip install mysql.connector\\n!pip install mysql.connector.python\\n!pip install sqlalchemy\\n!pip install pymysql\\n\\n'"
+      ]
+     },
+     "execution_count": 1,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "'''\n",
+    "!pip install mysql.connector\n",
+    "!pip install mysql.connector.python\n",
+    "!pip install sqlalchemy\n",
+    "!pip install pymysql\n",
+    "\n",
+    "'''"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 10,
+   "id": "37d20b1b",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import pymysql\n",
+    "from sqlalchemy import create_engine\n",
+    "import pandas as pd\n",
+    "import numpy as np"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "id": "b4268fa3",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "········\n"
+     ]
+    }
+   ],
+   "source": [
+    "import getpass\n",
+    "password = getpass.getpass()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 17,
+   "id": "1639585c",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "<div>\n",
+       "<style scoped>\n",
+       "    .dataframe tbody tr th:only-of-type {\n",
+       "        vertical-align: middle;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe tbody tr th {\n",
+       "        vertical-align: top;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe thead th {\n",
+       "        text-align: right;\n",
+       "    }\n",
+       "</style>\n",
+       "<table border=\"1\" class=\"dataframe\">\n",
+       "  <thead>\n",
+       "    <tr style=\"text-align: right;\">\n",
+       "      <th></th>\n",
+       "      <th>customer_name</th>\n",
+       "      <th>nr_rentals_may</th>\n",
+       "      <th>nr_rentals_june</th>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>customer_id</th>\n",
+       "      <th></th>\n",
+       "      <th></th>\n",
+       "      <th></th>\n",
+       "    </tr>\n",
+       "  </thead>\n",
+       "  <tbody>\n",
+       "    <tr>\n",
+       "      <th>197</th>\n",
+       "      <td>SUE PETERS</td>\n",
+       "      <td>8</td>\n",
+       "      <td>8</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>176</th>\n",
+       "      <td>JUNE CARROLL</td>\n",
+       "      <td>5</td>\n",
+       "      <td>8</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>371</th>\n",
+       "      <td>BILLY POULIN</td>\n",
+       "      <td>6</td>\n",
+       "      <td>7</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>109</th>\n",
+       "      <td>EDNA WEST</td>\n",
+       "      <td>7</td>\n",
+       "      <td>5</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>196</th>\n",
+       "      <td>ALMA AUSTIN</td>\n",
+       "      <td>4</td>\n",
+       "      <td>8</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>...</th>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>440</th>\n",
+       "      <td>BERNARD COLBY</td>\n",
+       "      <td>1</td>\n",
+       "      <td>0</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>487</th>\n",
+       "      <td>HECTOR POINDEXTER</td>\n",
+       "      <td>0</td>\n",
+       "      <td>1</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>555</th>\n",
+       "      <td>DWIGHT LOMBARDI</td>\n",
+       "      <td>0</td>\n",
+       "      <td>1</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>598</th>\n",
+       "      <td>WADE DELVALLE</td>\n",
+       "      <td>0</td>\n",
+       "      <td>1</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>195</th>\n",
+       "      <td>VANESSA SIMS</td>\n",
+       "      <td>0</td>\n",
+       "      <td>0</td>\n",
+       "    </tr>\n",
+       "  </tbody>\n",
+       "</table>\n",
+       "<p>599 rows × 3 columns</p>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "                 customer_name  nr_rentals_may  nr_rentals_june\n",
+       "customer_id                                                    \n",
+       "197                 SUE PETERS               8                8\n",
+       "176               JUNE CARROLL               5                8\n",
+       "371               BILLY POULIN               6                7\n",
+       "109                  EDNA WEST               7                5\n",
+       "196                ALMA AUSTIN               4                8\n",
+       "...                        ...             ...              ...\n",
+       "440              BERNARD COLBY               1                0\n",
+       "487          HECTOR POINDEXTER               0                1\n",
+       "555            DWIGHT LOMBARDI               0                1\n",
+       "598              WADE DELVALLE               0                1\n",
+       "195               VANESSA SIMS               0                0\n",
+       "\n",
+       "[599 rows x 3 columns]"
+      ]
+     },
+     "execution_count": 17,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "connection_string = 'mysql+pymysql://root:' + password + '@localhost/bank'\n",
+    "engine = create_engine(connection_string)\n",
+    "data = pd.read_sql_query('select * from sakila.rentals_may_june', engine)\n",
+    "data = data.set_index('customer_id')\n",
+    "data"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 20,
+   "id": "6eae4c81",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def compare_rentals_may_june(df):\n",
+    "    df['most_rentals'] = np.where(df['nr_rentals_may'] > df['nr_rentals_june'], 'may',\n",
+    "                              np.where(df['nr_rentals_may'] < df['nr_rentals_june'], 'june', 'equal'))\n",
+    "    return df"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 21,
+   "id": "0e35377b",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "<div>\n",
+       "<style scoped>\n",
+       "    .dataframe tbody tr th:only-of-type {\n",
+       "        vertical-align: middle;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe tbody tr th {\n",
+       "        vertical-align: top;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe thead th {\n",
+       "        text-align: right;\n",
+       "    }\n",
+       "</style>\n",
+       "<table border=\"1\" class=\"dataframe\">\n",
+       "  <thead>\n",
+       "    <tr style=\"text-align: right;\">\n",
+       "      <th></th>\n",
+       "      <th>customer_name</th>\n",
+       "      <th>nr_rentals_may</th>\n",
+       "      <th>nr_rentals_june</th>\n",
+       "      <th>most_rentals</th>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>customer_id</th>\n",
+       "      <th></th>\n",
+       "      <th></th>\n",
+       "      <th></th>\n",
+       "      <th></th>\n",
+       "    </tr>\n",
+       "  </thead>\n",
+       "  <tbody>\n",
+       "    <tr>\n",
+       "      <th>197</th>\n",
+       "      <td>SUE PETERS</td>\n",
+       "      <td>8</td>\n",
+       "      <td>8</td>\n",
+       "      <td>equal</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>176</th>\n",
+       "      <td>JUNE CARROLL</td>\n",
+       "      <td>5</td>\n",
+       "      <td>8</td>\n",
+       "      <td>june</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>371</th>\n",
+       "      <td>BILLY POULIN</td>\n",
+       "      <td>6</td>\n",
+       "      <td>7</td>\n",
+       "      <td>june</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>109</th>\n",
+       "      <td>EDNA WEST</td>\n",
+       "      <td>7</td>\n",
+       "      <td>5</td>\n",
+       "      <td>may</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>196</th>\n",
+       "      <td>ALMA AUSTIN</td>\n",
+       "      <td>4</td>\n",
+       "      <td>8</td>\n",
+       "      <td>june</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>...</th>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>440</th>\n",
+       "      <td>BERNARD COLBY</td>\n",
+       "      <td>1</td>\n",
+       "      <td>0</td>\n",
+       "      <td>may</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>487</th>\n",
+       "      <td>HECTOR POINDEXTER</td>\n",
+       "      <td>0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>june</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>555</th>\n",
+       "      <td>DWIGHT LOMBARDI</td>\n",
+       "      <td>0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>june</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>598</th>\n",
+       "      <td>WADE DELVALLE</td>\n",
+       "      <td>0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>june</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>195</th>\n",
+       "      <td>VANESSA SIMS</td>\n",
+       "      <td>0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>equal</td>\n",
+       "    </tr>\n",
+       "  </tbody>\n",
+       "</table>\n",
+       "<p>599 rows × 4 columns</p>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "                 customer_name  nr_rentals_may  nr_rentals_june most_rentals\n",
+       "customer_id                                                                 \n",
+       "197                 SUE PETERS               8                8        equal\n",
+       "176               JUNE CARROLL               5                8         june\n",
+       "371               BILLY POULIN               6                7         june\n",
+       "109                  EDNA WEST               7                5          may\n",
+       "196                ALMA AUSTIN               4                8         june\n",
+       "...                        ...             ...              ...          ...\n",
+       "440              BERNARD COLBY               1                0          may\n",
+       "487          HECTOR POINDEXTER               0                1         june\n",
+       "555            DWIGHT LOMBARDI               0                1         june\n",
+       "598              WADE DELVALLE               0                1         june\n",
+       "195               VANESSA SIMS               0                0        equal\n",
+       "\n",
+       "[599 rows x 4 columns]"
+      ]
+     },
+     "execution_count": 21,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "compare_rentals_may_june(data)"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3 (ipykernel)",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.11.5"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}
diff --git a/lab-sql-9.sql b/lab-sql-9.sql
new file mode 100644
index 0000000..b7e5afb
--- /dev/null
+++ b/lab-sql-9.sql
@@ -0,0 +1,20 @@
+create temporary table sakila.rentals_may as select * from sakila.rental where month(rental_date)=5;
+create temporary table sakila.rentals_june as select * from sakila.rental where month(rental_date)=6;
+
+select concat(cust.first_name, " ", cust.last_name) as customer_name, count(may.rental_id) as nr_rentals_may
+from sakila.customer cust left join sakila.rentals_may may 
+on may.customer_id = cust.customer_id
+group by cust.customer_id order by 2 desc;
+
+create table sakila.rentals_may_june 
+as select cust.customer_id, concat(cust.first_name, " ", cust.last_name) as customer_name, 
+count(distinct may.rental_id) as nr_rentals_may, count(distinct june.rental_id) as nr_rentals_june
+from
+sakila.customer as cust 
+left join sakila.rentals_may as may
+on may.customer_id = cust.customer_id
+left join sakila.rentals_june as june
+on june.customer_id = cust.customer_id
+group by cust.customer_id order by (nr_rentals_may + nr_rentals_june) desc;
+
+select * from sakila.rentals_may_june;
\ No newline at end of file