Import Real-Time PostgreSQL Data via ODBC in ColdFusion to Build Applications

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 PostgreSQL, you can link your ColdFusion web and mobile applications to operational PostgreSQL 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 PostgreSQL data from within a ColdFusion markup file.

To follow along with this tutorial, you need to install the CData ODBC Driver for PostgreSQL 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 PostgreSQL, set the Server, Port (the default port is 5432), and Database connection properties and set the User and Password you wish to use to authenticate to the server. If the Database property is not specified, the data provider connects to the user's default database.

SSH Connectivity for PostgreSQL

You can use SSH (Secure Shell) to authenticate with PostgreSQL, whether the instance is hosted on-premises or in supported cloud environments. SSH authentication ensures that access is encrypted (as compared to direct network connections).

SSH Connections to PostgreSQL in Password Auth Mode

To connect to PostgreSQL via SSH in Password Auth mode, set the following connection properties:

• User: PostgreSQL User name
• Password: PostgreSQL Password
• Database: PostgreSQL database name
• Server: PostgreSQL Server name
• Port: PostgreSQL port number like 3306
• UserSSH: "true"
• SSHAuthMode: "Password"
• SSHPort: SSH Port number
• SSHServer: SSH Server name
• SSHUser: SSH User name
• SSHPassword: SSH Password

SSH Connections to PostgreSQL in Public Key Auth Mode

To connect to PostgreSQL via SSH in Password Auth mode, set the following connection properties:

• User: PostgreSQL User name
• Password: PostgreSQL Password
• Database: PostgreSQL database name
• Server: PostgreSQL Server name
• Port: PostgreSQL port number like 3306
• UserSSH: "true"
• SSHAuthMode: "Public_Key"
• SSHPort: SSH Port number
• SSHServer: SSH Server name
• SSHUser: SSH User name
• SSHClientCret: the path for the public key certificate file

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 PostgreSQL Data and display it in a table in ColdFusion:

1. From the ColdFusion administrator interface, choose Data & Services. 👁 Selecting Data & Services
   
2. 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. 👁 Adding Data Source Name
   
3. From the ODBC DSN Dropdown menu select CData PostgreSQL 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. 👁 Populating driver properties
   
4. Now, test the connection by pressing the check mark to the left of the CDataPostgreSQLODBC data source you just created. When the data source reports an "OK" status, it is ready for use. 👁 Testing the connection
   
5. 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="PostgreSQLQuery" dataSource="CDataPostgreSQLODBC"> 
    SELECT * FROM Orders 
    </cfquery> 
    

   And a CFTable can be used to quickly output the table in HTML:

    
    <cftable 
    query = "PostgreSQLQuery" 
    border = "1" 
    colHeaders 
    colSpacing = "2" 
    headerLines = "2" 
    HTMLTable 
    maxRows = "500" 
    startRow = "1"> 
   
    <cfcol header="<b>ShipName</b>" align="Left" width=2 text="ShipName"/> 
   
    <cfcol header="<b>ShipCity</b>" align="Left" width=15 text="ShipCity"/> 
   
    ...
   
    </cftable> 
    

   Full code, including the HTML portion is available below:

    
    <html> 
    <head><title>CData Software | PostgreSQL Orders Table Demo </title></head> 
    <body> 
    <cfoutput>#ucase("PostgreSQL Orders Table Demo")#</cfoutput> 
    <cfquery name="PostgreSQLQuery" dataSource="CDataPostgreSQLODBC"> 
   
    SELECT * FROM Orders 
   
    </cfquery> 
    <cftable 
    query = "PostgreSQLQuery" 
    border = "1" 
    colHeaders 
    colSpacing = "2" 
    headerLines = "2" 
    HTMLTable 
    maxRows = "500" 
    startRow = "1"> 
    <cfcol header="<b>ShipName</b>" align="Left" width=2 text="ShipName"/> 
   
    <cfcol header="<b>ShipCity</b>" align="Left" width=15 text="ShipCity"/> 
   
    ...
   
    </cftable> 
    </body> 
   
    </html> 
    

6. Finally, run the code in a browser. It produces a table populated with PostgreSQL data! 👁 Running the code
   

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 PostgreSQL and start building PostgreSQL-connected applications with Adobe ColdFusion. Reach out to our Support Team if you have any questions.