关于“透過 BigQuery 建構資料倉儲：挑戰實驗室”的评价

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Snigdha C. · 评论over 1 year之前

for question 2, when i populate the mobility record with this query, my answer is not accepted, and i do not understand why: INSERT INTO covid_data.consolidate_covid_tracker_data ( mobility) SELECT STRUCT( AVG(retail_and_recreation_percent_change_from_baseline) as avg_retail, AVG(grocery_and_pharmacy_percent_change_from_baseline) as avg_grocery, AVG(parks_percent_change_from_baseline) as avg_parks, AVG(transit_stations_percent_change_from_baseline) as avg_transit, AVG( workplaces_percent_change_from_baseline ) as avg_workplace, AVG( residential_percent_change_from_baseline) as avg_residential) AS mobility FROM `bigquery-public-data.covid19_google_mobility.mobility_report` GROUP BY country_region, date i have also tried to insert the date and country_area columns, but there is no column corresponding to country_area column in the target table. i would like to know what i am doing wrong. **UPDATE** when i tried the lab for the fourth time, the questions were changed.

Burcu A. · 评论over 1 year之前

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Ashutosh W. · 评论over 1 year之前

kausik p. · 评论over 1 year之前

for question 2, when i populate the mobility record with this query, my answer is not accepted, and i do not understand why: INSERT INTO covid_data.consolidate_covid_tracker_data ( mobility) SELECT STRUCT( AVG(retail_and_recreation_percent_change_from_baseline) as avg_retail, AVG(grocery_and_pharmacy_percent_change_from_baseline) as avg_grocery, AVG(parks_percent_change_from_baseline) as avg_parks, AVG(transit_stations_percent_change_from_baseline) as avg_transit, AVG( workplaces_percent_change_from_baseline ) as avg_workplace, AVG( residential_percent_change_from_baseline) as avg_residential) AS mobility FROM `bigquery-public-data.covid19_google_mobility.mobility_report` GROUP BY country_region, date i have also tried to insert the date and country_area columns, but there is no column corresponding to country_area column in the target table. i would like to know what i am doing wrong.

Burcu A. · 评论over 1 year之前

Oliwier M. · 评论over 1 year之前