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Use CData ODBC drivers to import and use Snowflake data in ColdFusion.
Adobe ColdFusion is a web and mobile application development platform. It uses its own scripting language, ColdFusion Markup Language (CFML), to create data-driven websites as well as generate remote services, such as REST. When ColdFusion is paired with the CData ODBC Driver for Snowflake, you can link your ColdFusion web and mobile applications to operational Snowflake data. This allows for your applications to be more robust and complete. This article details how to use the ODBC driver to create a table populated with Snowflake data from within a ColdFusion markup file.
To follow along with this tutorial, you need to install the CData ODBC Driver for Snowflake and Adobe ColdFusion.
Configuring the Connection
If you have not already, first specify connection properties in an ODBC DSN (Data Source Name). This is the last step of the driver installation process. You can use the Microsoft ODBC Data Source Administrator to create and configure ODBC DSNs.
To connect to Snowflake:
- Set User and Password to your Snowflake credentials and set the AuthScheme property to PASSWORD or OKTA.
- Set URL to the URL of the Snowflake instance (i.e.: https://myaccount.snowflakecomputing.com).
- Set Warehouse to the Snowflake warehouse.
- (Optional) Set Account to your Snowflake account if your URL does not conform to the format above.
- (Optional) Set Database and Schema to restrict the tables and views exposed.
See the Getting Started guide in the CData driver documentation for more information.
Adding a Data Source and Creating a Table
After creating a DSN, follow the steps below to add a new data source, test our connection to it, create a ColdFusion markup file, and, finally, import Snowflake Snowflake data and display it in a table in ColdFusion:
- From the ColdFusion administrator interface, choose Data & Services.
- Here, click "Add New Data Source". The data source name can be any name, provided it conforms to the ColdFusion variable naming conventions. For our ODBC driver, choose "ODBC Socket", then click the "Add" button.
- From the ODBC DSN Dropdown menu select CData Snowflake Sys. Under the Advanced Settings section, leave the Connection String blank. Note that any properties specified in this input field will override the ones specified in the DSN Configuration.
- Now, test the connection by pressing the check mark to the left of the CDataSnowflakeODBC data source you just created. When the data source reports an "OK" status, it is ready for use.
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Next, create a new ColdFusion Markup file (.cfm) and place it in the wwwroot directory ("C:\ColdFusion2021\cfusion\wwwroot")
for ColdFusion.
The following code queries the data source:
<cfquery name="SnowflakeQuery" dataSource="CDataSnowflakeODBC"> SELECT * FROM Products </cfquery>
And a CFTable can be used to quickly output the table in HTML:<cftable query = "SnowflakeQuery" border = "1" colHeaders colSpacing = "2" headerLines = "2" HTMLTable maxRows = "500" startRow = "1"> <cfcol header="<b>Id</b>" align="Left" width=2 text="Id"/> <cfcol header="<b>ProductName</b>" align="Left" width=15 text="ProductName"/> ... </cftable>
Full code, including the HTML portion is available below:<html> <head><title>CData Software | Snowflake Products Table Demo </title></head> <body> <cfoutput>#ucase("Snowflake Products Table Demo")#</cfoutput> <cfquery name="SnowflakeQuery" dataSource="CDataSnowflakeODBC"> SELECT * FROM Products </cfquery> <cftable query = "SnowflakeQuery" border = "1" colHeaders colSpacing = "2" headerLines = "2" HTMLTable maxRows = "500" startRow = "1"> <cfcol header="<b>Id</b>" align="Left" width=2 text="Id"/> <cfcol header="<b>ProductName</b>" align="Left" width=15 text="ProductName"/> ... </cftable> </body> </html>
- Finally, run the code in a browser. It produces a table populated with Snowflake data!
As a note, the CData ODBC Drivers also support parameterized queries using the cfqueryparam element.
For example:
SELECT * FROM Account WHERE name =
Get Started Today
Download a free, 30-day trial of the CData ODBC Driver for Snowflake and start building Snowflake-connected applications with Adobe ColdFusion. Reach out to our Support Team if you have any questions.