Update with ALTER TABLE statements (#4707)

Co-authored-by: Abhi Vaidyanatha <abhivaidyanatha@Abhis-MacBook-Pro.local>

resources/examples/airflow/README.md

@@ -23,5 +23,10 @@ Head over to http://localhost:8088 to get to the Superset UI. Enter `admin` as y
 
 ![](./assets/superset_database_setup.png)
 
+```
+docker exec airbyte-destination psql -U postgres -c "ALTER TABLE stargazers ADD COLUMN starred_ts timestamp;"
+docker exec airbyte-destination psql -U postgres -c "UPDATE stargazers SET starred_ts = starred_at::timestamptz;"
+```
+
 ## Cleaning Up
 Run `down.sh` to clean up the containers. Or run `docker-compose down -v` here and in the root directory, your call.

resources/examples/airflow/up.sh

@@ -18,4 +18,5 @@ docker exec -ti airflow_webserver airflow connections add 'airbyte_example' --co
 echo "Access Airflow at http://localhost:8085 to kick off your Airbyte sync DAG."
 echo "Attempting to remove previous Superset installation."
 docker-compose -f superset/docker-compose-superset.yaml down -v
-docker-compose -f superset/docker-compose-superset.yaml up -d
+docker-compose -f superset/docker-compose-superset.yaml up -d
+echo "Access Superset at http://localhost:8088 to set up your dashboards."