![]() ![]() Do this by almost exactly repeating the above process: click “Join” in the bottom left corner, select “DSE Database”, and copy and paste the following syntax into the new “CQL Query*:” Now we’ve got location and speed, but we still need to add temperature.Select CAST(reading_time as text) as time, speed, journey_id, spacecraft_name In order to do this, click “Join” in the bottom left corner of your screen and select “DSE Database.” This will create a new query builder copy and paste the following syntax into the “CQL Query*” for your new query builder: The location and temperature are each in different tables, so we’re going to need to create two new queries within our main query that retrieves data from those tables. Our end goal is to see all of this information as well as the temperature and speed of this spacecraft. Right now, if we were to run this query, we would see the location of Apollo 11 at given points in time.Select CAST(reading_time as text) as time, location, journey_id, spacecraft_name Enter the following syntax into “CQL Query*”:.(Alternatively, you can go back to the panel on the left side of your screen, go right below “Data Sources” and click on “Queries.” Then select “New Query +” from the top right.) Configure Queries.” Click on the word queries. When you saved datasource, you should’ve received an alert at the top of your page that said “Datasource Added.Give it some time, and once you get a green “Connection Successful” alert at the top of your screen, click “Save.”Ĭongratulations on connecting to your datasource! Querying Your Data Click “Test Connection” at the bottom of your screen.Click on “Upload File.” This should automatically direct to the downloads folder in your computer, and your secure bundle zip should be right there.Find “Datasources” on the panel on the left side of your screen and click on it.Once you’ve downloaded your secure connect bundle zip file and logged into your free trial account, you’re ready to get started by connecting to Astrastax. ![]() A secure connect bundle zip file which you can download here.Before you get started, you’ll need the following things: In this tutorial, we’re going to learn how to use Knowi to connect to DataStax Astra, analyze, and visualize our data. Knowi offers broad native integration to DataStax Astra, which eliminates the need for tedious ETL processes and makes it very easy to connect to Astra, analyze data, and create visualizations. Astra removes the overhead required to install and operate Cassandra without sacrificing the reliability and security that Cassandra is known for, which makes it an intriguing up-and-comer in the DBaaS market. Querying Your Data Using Search-Based AnalyticsĭataStax Astra is a new database-as-a-service (DBaaS) platform offered by DataStax and built on open source Apache Cassandra NoSQL.Adding Drilldowns to Your Visualization.
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