Sum () after a join

SQL
1

I want to know how it is possible to do a sum of all the quantity after this join. If you have any idea i’ll take it :slight_smile:

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2

You should be able to add it as another column after SELECT:

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You can also name that “Sum” column if you want:
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Does that answer your question? :slight_smile:

3

Yes absolutely, thank your very much !!!