Zeppelin 中的 python.sql 错误：NameError: name 'pd' is not defined

Question

新增在 docker 中安装 zeppelin 和 girdb

git clone https://github.com/roenschg/griddb-zeppelin-quikstart.git
cd griddb-zeppelin-quikstart/
docker-compose build docker-compose up

连接到 GridDB

import jaydebeapi

conn = jaydebeapi.connect("com.toshiba.mwcloud.gs.sql.Driver",
                           "jdbc:gs://griddb:20001/defaultCluster/public?notificationMember:127.0.0.1:20001",
                           ["admin", "admin"],
                          "/usr/share/java/gridstore-jdbc-4.5.0.jar",)

为此，使用 SQL 查询和 Pandas 函数之一访问您的 GridDB 表，将数据直接提供给数据帧：

*sql = ("SELECT * FROM iotdata WHERE TIMESTAMP(timestamp) < TIMESTAMP_ADD(DAY, NOW(), -5)")
iotdf = pd.read_sql_query(sql, conn)*

输出

---------------------------------------------------------------------------
*NameError                                 Traceback (most recent call last)
<ipython-input-5-ac103e118435> in <module>
      1 sql = ("SELECT * FROM iotdata WHERE TIMESTAMP(timestamp) < TIMESTAMP_ADD(DAY, NOW(), -5)")
----> 2 iotdf = pd.read_sql_query(sql, conn)
NameError: name 'pd' is not defined*