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CockroachDB ODBC Driver
CockroachDB ODBC Driver を使って、ODBC 接続をサポートするあらゆるアプリケーション・ツールからCockroachDB にデータ連携。
CockroachDB データにデータベースと同感覚でアクセスして、ACockroachDB データに使い慣れたODBC インターフェースで双方向連携。BI、
CockroachDB にODBC データソースとしてPyCharm から連携。
CData ODBC Drivers は、ODBC をサポートするあらゆる環境から利用可能です。 本記事では、PyCharm からのCData ODBC Driver for CockroachDB の利用を説明します。ODBC Deriver をデータソースとして設定する方法、データソースをクエリするPyCharm のベーシックな方法を含みます。
To begin, this tutorial will assume that you have already installed the CData ODBC Driver for CockroachDB as well as PyCharm.
Pyodbc をプロジェクトに追加
Follow the steps below to add the pyodbc module to your project.
- Click File -> Settings to open the project settings window.
- Click Project Interpreter from the Project: YourProjectName menu.
- To add pyodbc, click the + button and enter pyodbc.
- Click Install Package to install pyodbc.
CockroachDB への接続
You can now connect with an ODBC connection string or a DSN. See the Getting Started section in the CData driver documentation for a guide to creating a DSN on your OS.
Set the following to connect to CockroachDB.
- Server: The host name or IP address of the server.
- Port: The port number of the CockroachDB server. If not specified, the default port is 26257.
- Database: The name of the Cockroach database. If not specified, you connect to the user's default database.
- User: The Cockroach DB user account used to authenticate.
- Password: The password used to authenticate the user.
Below is the syntax for a DSN:
[CData CockroachDB Source]
Driver = CData ODBC Driver for CockroachDB
Description = My Description
User = root
Password = root
Database = system
Server = localhost
Port = 26257
CockroachDB へのクエリの実行
Instantiate a Cursor and use the execute method of the Cursor class to execute any SQL statement.
import pyodbc
cnxn = pyodbc.connect('DRIVER={CData ODBC Driver for CockroachDB};User = root;Password = root;Database = system;Server = localhost;Port = 26257')
cursor = cnxn.cursor()
cursor.execute("SELECT ShipName, ShipCity FROM Orders WHERE ShipCountry = 'USA'")
rows = cursor.fetchall()
for row in rows:
print(row.ShipName, row.ShipCity)
After connecting to CockroachDB in PyCharm using the CData ODBC Driver, you will be able to build Python apps with access to CockroachDB data as if it were a standard database. If you have any questions, comments, or feedback regarding this tutorial, please contact us at support@cdata.com.