关于“使用 BigQuery 构建数据仓库：实验室挑战赛”的评价

Amir Z. · 已于 about 2 years前审核

Marko C. · 已于 about 2 years前审核

Task 1 should explicitly say that the expiration date relates to the partition and not to the table. The current wording is confussing.

José S. · 已于 about 2 years前审核

Oluwaseyi O. · 已于 about 2 years前审核

John M. · 已于 about 2 years前审核

Indrajit A. · 已于 about 2 years前审核

Adrian C. · 已于 about 2 years前审核

Pawel K. · 已于 about 2 years前审核

Christodoulos S. · 已于 about 2 years前审核

Pawel K. · 已于 about 2 years前审核

This lab is INCORRECT. Task 4 says "Delete data from the oxford_policy_tracker_by_countries table in the covid_data BigQuery dataset where the population and country_area value is null." DELETE FROM covid_data.oxford_policy_tracker_by_countries WHERE population is Null AND country_area is null; should be the solution. But it is incorrect. The lab requires using an OR instead of AND. Therefore the question is WRONG. DELETE FROM covid_data.oxford_policy_tracker_by_countries WHERE population is Null OR country_area is null; It should say "Delete data from the oxford_policy_tracker_by_countries table in the covid_data BigQuery dataset where the population OR country_area value is null.

Scott C. · 已于 about 2 years前审核

xalid O. · 已于 about 2 years前审核

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Jan B. · 已于 about 2 years前审核