关于“利用 BigQuery 排解常見的 SQL 錯誤”的评价

Muhammad Rofi' F. · 评论almost 2 years之前

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Alex G. · 评论almost 2 years之前

Alex G. · 评论almost 2 years之前

Some questions are ambiguous and refer to insights on the data wrongfully. For example, at the start of task 4 we are told that we want to know the top selling products. That differs from the title of Task 4 which speaks about counting products in each category (the actual queries). One question is about the importance of a Distinct which only makes sense when counting products and not sales, therefore deriving in an error if you believed the description at the start of the Task.

Marc P. · 评论almost 2 years之前