Query Placid Data through ODBC in Node.js

Node.js is a JavaScript runtime environment that allows you to run JavaScript code outside of a browser. With the CData API Driver for ODBC, you can access live Placid data from Node.js apps and scripts. In this article, we walk through installing node-odbc and the required tools to create a simple Node.js app with access to live Placid data.

With built-in optimized data processing, the CData ODBC Driver offers unmatched performance for interacting with live Placid data in Node.js. When you issue complex SQL queries from Node.js to Placid, the driver pushes supported SQL operations, like filters and aggregations, directly to Placid and utilizes the embedded SQL engine to process unsupported operations client-side (often SQL functions and JOIN operations).

Connecting to Placid Data

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.

Placid uses API Key authentication to control access to the API. API tokens are project-specific and can be obtained from your project settings on placid.app.

Using API Key Authentication

To obtain your API key, log in to placid.app, navigate to your project, open the project settings, and generate an API token from the API section. Note that each API token is scoped to a specific project.

After setting the following connection properties, you are ready to connect:

• AuthScheme: Set this to APIKey.
• APIKey: Set this to your Placid project API token.

Example connection string:

Profile=C:\profiles\Placid.apip;AuthScheme=APIKey;ProfileSettings='APIKey=your_project_api_token';

Building node-odbc

In order to connect to Placid through the CData ODBC Driver, you need to build node-odbc manually (after installing the required tools).

Installing the Required Tools

The following commands install the tools required to build node-odbc (note the -g parameter, which installs the tools globally).

npm i -g windows-build-tools
npm i -g node-gyp

Building node-odbc

After installing the required tools, create a directory for the Node.js app and install odbc (which builds the binary for us to use in our Node.js script).

mkdir nodeodbc
cd nodeodbc
npm i -g node

Querying Placid from Node.js

With the ODBC Driver installed, a DSN Configured, and node-odbc built, we are ready to query live Placid data from a Node.js app. The sample code below connects to a specific DSN and queries the Collections table.

myscript.js

const odbc = require('odbc');

async function queryAPI() {
    const connection = await odbc.connect(`DSN=CData API Source`);
    const data = await connection.query('SELECT ,  FROM Collections');
    console.log(data);
}

queryAPI();

Once you write the app, use node to execute the script:

node myscript.js

Download a free, 30-day trial of the CData API Driver for ODBC and start working with your live Placid data in Node.js. Reach out to our Support Team if you have any questions.