It is possible to visualize data from PostgreSQL using Targetprocess Visual Reports.
Using PostgreSQL App
Start with creating a new report, select PostgreSQL app, provide the name of connection and connection string to PostgreSQL. You can read more about connection string here.
Configure data settings using PostgreSQL table source type
Select table source type if the the count of records is less than 200,000. It is possible to limit the count of retrieved rows using Filter, Sort, Limit options. We have imported Flowers Dataset to "flowers" PostgreSQL table for this example.
Create an awesome chart
Retrieve data using PostgreSQL query source
Alternatively, you can use the Query source. It is useful in the case when the count of records is bigger than 200,000.
So the chart configuration may look like this.