Python-PostgreSQL-connect

SQL_PostgreSQL_Test.ipynb

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   "source": [
    "#psycopg2パッケージをインストールしていない場合は先に下記を実行\n",
    "# anacondaを使っている場合は、ターミナルで 「conda install psycopg2 」でもよい\n",
    "#!pip install psycopg2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "import psycopg2\n",
    "import pandas as pd"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "#接続情報、実際は、環境に合わせて設定すること\n",
    "connector = psycopg2.connect(\n",
    "                            host=\"localhost\", \n",
    "                            database=\"postgres\", \n",
    "                            user=\"postgres\", \n",
    "                            password=\"pass\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [],
   "source": [
    "test_sql1 = ('''\n",
    "                SELECT  *\n",
    "                FROM \n",
    "                    testers;\n",
    "            ''')\n",
    "test_result1 = pd.read_sql(test_sql1,connector)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
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       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>user_id</th>\n",
       "      <th>install_date</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>0</th>\n",
       "      <td>1</td>\n",
       "      <td>2017-06-16 09:20:20</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1</th>\n",
       "      <td>2</td>\n",
       "      <td>2017-06-16 08:27:05</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>2</th>\n",
       "      <td>3</td>\n",
       "      <td>2017-06-16 08:30:38</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3</th>\n",
       "      <td>4</td>\n",
       "      <td>2017-06-16 09:12:03</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>5</td>\n",
       "      <td>2017-06-16 09:00:13</td>\n",
       "    </tr>\n",
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      "text/plain": [
       "   user_id        install_date\n",
       "0        1 2017-06-16 09:20:20\n",
       "1        2 2017-06-16 08:27:05\n",
       "2        3 2017-06-16 08:30:38\n",
       "3        4 2017-06-16 09:12:03\n",
       "4        5 2017-06-16 09:00:13"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "#上記クエリの実行結果を確認\n",
    "test_result1.head()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
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