关于“使用 Join 和 Union 创建数据仓库”的评价

Uyên V. · 已于 almost 5 years前审核

Rahul G. · 已于 almost 5 years前审核

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Nikhil R. · 已于 almost 5 years前审核

Tín L. · 已于 almost 5 years前审核

There was no need to DISTINCT in the query to select productsku and total orders. That query already used a group by, so each productsku can only take up 1 row , so the distinct was useless

Pro M. · 已于 almost 5 years前审核

Phúc T. · 已于 almost 5 years前审核

Nguyen Ngoc My Quyen (. · 已于 almost 5 years前审核

GREAT

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