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MySQL のFederated Table としてYahoo Shopping データを連携利用する
SQL Gateway とODBC Driver を使ってYahoo Shopping のMySQL Federated Table を構築する。SQL Gateway を使って、MySQL リモーティングサービスを作成し、Yahoo Shopping のMySQL Federated Table を構築できます。CData ODBC Driver for Yahoo Shopping のMySQL インターフェースのdeamon になります。サービス起動後、MySQL のFEDERATED ストレージエンジンを使ってサーバーおよびテーブルを作成します。Yahoo Shopping data をMySQL テーブルのように使いましょう。
Yahoo Shopping データへの接続
If you have not already done so, provide values for the required connection properties in the data source name (DSN). You can use the built-in Microsoft ODBC Data Source Administrator to configure the DSN. This is also the last step of the driver installation. See the "Getting Started" chapter in the help documentation for a guide to using the Microsoft ODBC Data Source Administrator to create and configure a DSN.
ユーザー資格情報の接続プロパティを設定せずに接続できます。 接続すると、本製品はデフォルトブラウザでOAuth エンドポイントを開きます。ログインして、本製品にアクセス許可を与えます。本製品がOAuth プロセスを完了します。
SQL Gateway の設定
See the SQL Gateway Overview to set up connectivity to Yahoo Shopping data as a virtual MySQL database. You will configure a MySQL remoting service that listens for MySQL requests from clients. The service can be configured in the SQL Gateway UI.
Yahoo Shopping Data のFEDERATED サーバーおよびテーブルを作成
After you have configured and started the service, create a FEDERATED server to simplify the process of creating FEDERATED tables:
FEDERATED サーバーの作成
The following statement will create a FEDERATED server based on the ODBC Driver for Yahoo Shopping. Note that the username and password of the FEDERATED server must match a user account you defined on the Users tab of the SQL Gateway.
CREATE SERVER fedYahooShopping FOREIGN DATA WRAPPER mysql OPTIONS (USER 'sql_gateway_user', PASSWORD 'sql_gateway_passwd', HOST 'sql_gateway_host', PORT ####, DATABASE 'CData YahooShopping Sys');
FEDERATED テーブルの作成
To create a FEDERATED table using our newly created server, use the CONNECTION keyword and pass the name of the FEDERATED server and the remote table (Products). Refer to the following template for the statement to create a FEDERATED table:
CREATE TABLE fed_products ( ..., itemcode TYPE(LEN), price TYPE(LEN), ..., ) ENGINE=FEDERATED DEFAULT CHARSET=latin1 CONNECTION='fedYahooShopping/products';
NOTE: The table schema for the FEDERATED table must match the remote table schema exactly. You can always connect directly to the MySQL remoting service using any MySQL client and run a SHOW CREATE TABLE query to get the table schema.
クエリの実行
You can now execute queries to the Yahoo Shopping FEDERATED tables from any tool that can connect to MySQL, which is particularly useful if you need to JOIN data from a local table with data from Yahoo Shopping. Refer to the following example:
SELECT fed_products.itemcode, local_table.custom_field FROM local_table JOIN fed_products ON local_table.foreign_itemcode = fed_products.itemcode;