[Examples] COVID Vaccine dashboard contains query errors

[octaviancorlade]

In a clean master or latest branch, with docker-compose up the COVID Vaccine dashboard contains many errors like this:

superset_app             | Traceback (most recent call last):
superset_app             |   File "/app/superset/connectors/sqla/models.py", line 1320, in query
superset_app             |     df = self.database.get_df(sql, self.schema, mutator)
superset_app             |   File "/app/superset/models/core.py", line 390, in get_df
superset_app             |     self.db_engine_spec.execute(cursor, sqls[-1])
superset_app             |   File "/app/superset/db_engine_specs/base.py", line 909, in execute
superset_app             |     cursor.execute(query)
superset_app             | psycopg2.errors.UndefinedColumn: column "stage_of_development" does not exist
superset_app             | LINE 2:            WHEN Stage_of_Development = 'Pre-clinical' THEN '...
superset_app             |                         ^
superset_app             | HINT:  Perhaps you meant to reference the column "covid_vaccines.Stage_of_Development".

This is expected with column names that are not all lowercase in Postgres, unless they are wrapped in double quotes

Expected results

The example dashboards should work on a clean installation

Actual results

The example COVID Vaccine dashboard contains many errors. The error in one of the charts is also displayed different than the others, but the problem seems to be the same in the database.

Screenshots

How to reproduce the bug

git clone git@github.com:apache/superset.git
cd superset
docker-compose up

then login and open the dashboard

Environment

(please complete the following information):

• superset version: Superset 0.999.0dev
• python version: Python 3.7.9
• node.js version: v12.20.1
• Docker version 20.10.2, build 2291f61
• docker-compose version 1.27.4, build 40524192

Checklist

Make sure to follow these steps before submitting your issue - thank you!

• I have checked the superset logs for python stacktraces and included it here as text if there are any.
• I have reproduced the issue with at least the latest released version of superset.
• I have checked the issue tracker for the same issue and I haven't found one similar.

[junlincc]

thanks for reporting! multiple users have reported, mistaking it as a functional issue.
I consider this as a 1.0 release blocker. hopefully we can address is soon.

@eschutho

[eschutho]

Thanks @junlincc for flagging. We're looking at this now.

[betodealmeida]

Working on it

[junlincc]

manually tested, confirmed issues is resolved in master, we will have it in for 1.0 release. thanks for the quick fix! @betodealmeida @eschutho