Posts by Herriot • 47 points
3 posts
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2
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answer30
viewsQ: $sum returning value 0
I created the database and fill in a 'stock' collection as in the attached figure. I was trying to make the sum of the quantity of items in the stock, but Mongo only returns me the value 0 (zero). I…
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votes1
answer99
viewsQ: Remove documents embedded in Mongodb
I have a collection 'collection', with documents of the type: { 'autor':'Fulano', 'livros':[ {'Título':'Livro A','páginas':200}, {'Título':'Livro B','páginas':150}, {'Título':'Livro…
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2
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answer237
viewsQ: How to update a document within another document without deleting previous data in Mongodb?
Actually, I have two questions: Imagine a collection livro structured: { "Título" : "MongoDB para iniciantes", "Tags" : [ "MongoDB", "NoSQL" ], "Comentários" : [ { "Comentarista" : "Ana",…