#83 Aggregation pipeline: $unwind & $project |Using MongoDB with Express | A Complete NODE JS Course

[@b.s.n.murthy8798]

The depth of your playlist is very deep than the ocean . I don't know these topics exist too

[@canmertinyo]

thank you

[@diogogaio]

I'm wondering how these aggregations queries may increase the billing, or spend quota limitations, due to of the number of documents scanning, reading and processing before returning the results...

[@hassannouri9796]

❤❤❤

[@giorgiobrugnone6879]

Great video tnx.
I ask, if genres where on another collections and i used lookup to retrive them into movies aggregation, how it would be possilbe to get movies documents filtered by a specific genre name, if genres arrives from another collection?
Tnx

[@acupoflie]

I don't for what it will be useful in the future but for practice and for interest i did research to find how to do that, and found this way for that.
First of all request the collection where genres stored.
// example aggregate
const genres = Genres.aggregate([. // without await !!
{ $match: {genre: req.params.genre}}
])
then get that variable from query
// index inside of at() func shows stages of aggregate
let genreForMovies = genres.pipeline().at(0).$match;
it will return object like { genre: "Drama" }
with this object get the value of variable and make another aggregate for movies collection
good luck

[@DecoyCheats]

which VS Code theme are you using sir?

[@harshmehta1141]

Bro like Sci-Fi Movies

[@BilelBennour-w2s]

did you share the code sir ?

[@mohamedibrahemsaad573]

{29-9-2024}

[@Pareshbpatel]

{2023-08-29}