GROUP BY Clause (SQL) - Summarize Results into Groups

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In SQL, we can use GROUP BY to summarize our results into groups.
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Perfect great explaination. IDK why people tend to over complicatie stuf like this so much. Keep up the good work.

nawinjinx
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Thank you for making this so easy to understand!

Tinaisspooky
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Thank you this is the best explanation.

NEMOSnowtographer
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How can we pull out sum of quantities by descending order irrespective of category

Ramakrishna-seel
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At 1:28. If you order by Sum(Quantity), shouldn't it be in the order of (1268, 1025, 724, 690)?

rex