Generate and insert data into a Postgres database

This is Workflow 1 in the blog tutorial Database activity monitoring and alerting. Prerequisites A Postgres database set up and credentials. Basic knowledge of JavaScript and SQL. Nodes Cron node starts the workflow every minute. Function node generates sensor data (sensor id (preset), a randomly generated value, timestamp, and notification (preset as false) ) Postgres node inserts the data into a Postgres database. You can create the database for this workflow with the following SQL statement: CREATE TABLE n8n (id SERIAL, sensorid VARCHAR, value INT, timestamp TIMESTAMP, notification BOOLEAN);

Help me set up the n8n workflow "Generate and insert data into a Postgres database" (https://n8n.io/workflows/356). It uses: Postgres. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.