Connect to OData Services from HeidiSQL

HeidiSQL is an open-source database administration tool that natively supports MariaDB, MySQL, SQL Server, and PostgreSQL. When paired with CData Connect Cloud, HediSQL reach extends to include access to live OData services. This article demonstrates how to connect to OData using Connect Cloud and query OData services in HeidiSQL.

CData Connect Cloud provides a pure SQL Server interface for OData, allowing you to query data from OData without replicating the data to a natively supported database. Using optimized data processing out of the box, CData Connect Cloud pushes all supported SQL operations (filters, JOINs, etc.) directly to OData, leveraging server-side processing to return the requested OData services quickly.

Configure OData Connectivity for HeidiSQL

Connectivity to OData from HeidiSQL is made possible through CData Connect Cloud. To work with OData services from HeidiSQL, we start by creating and configuring a OData connection.

1. Log into Connect Cloud, click Connections and click Add Connection
2. Select "OData" from the Add Connection panel
3. Enter the necessary authentication properties to connect to OData.

   The User and Password properties, under the Authentication section, must be set to valid OData user credentials. In addition, you will need to specify a URL to a valid OData server organization root or OData services file.

4. Click Create & Test
5. Navigate to the Permissions tab in the Add OData Connection page and update the User-based permissions.

Add a Personal Access Token

If you are connecting from a service, application, platform, or framework that does not support OAuth authentication, you can create a Personal Access Token (PAT) to use for authentication. Best practices would dictate that you create a separate PAT for each service, to maintain granularity of access.

1. Click on your username at the top right of the Connect Cloud app and click User Profile.
2. On the User Profile page, scroll down to the Personal Access Tokens section and click Create PAT.
3. Give your PAT a name and click Create.
4. The personal access token is only visible at creation, so be sure to copy it and store it securely for future use.

Connect to OData from HeidiSQL using Connect Cloud

To establish a connection from HeidiSQL to the CData Connect Cloud Virtual SQL Server API, follow these steps.

Create a new HeidiSQL Session

1. In the Session Manager, select New in the bottom-left
2. Give the new session a descriptive name, e.g. Connect-Cloud-OData

Configure a SQL Server Connection to Connect Cloud

1. In the session settings, set the Network type to Microsoft SQL Server (TCP/IP)
2. The Library DLL should automatically update to MSOLEDBSQL
3. Set the Hostname/IP to tds.cdata.com
4. Set the User to your CData Connect Cloud username. This is displayed in the top-right corner of the CData Connect Cloud interface. For example, [email protected]
5. Set the Password to your PAT created in Connect Cloud in the previous section.
6. Set the Port to 14333

Query OData from HeidiSQL

1. In the database listing on the left, find your connection to OData configured earlier.
2. Expand this connection to view individual tables or data objects present within OData.
3. Write custom SQL queries targeting these tables, treating the data source like any SQL Server database, or visually explore each tabular data set by selecting the relevant tables

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