Posts by Juliane Magalhães • 71 points
2 posts
-
2
votes1
answer28
viewsA: I cannot return another field other than the primary key using $project
People got it, just project the attribute I wanted to show. db.animais.aggregate([ {$unwind : "$doencas" }, {$project : { year : {$year : "$doencas.data_diagnostico"}, apelido: 1 }}, {$match : {year…
-
5
votes1
answer28
viewsQ: I cannot return another field other than the primary key using $project
I’m starting in Mongodb and would like to perform a consultation in my database of type: Which animals got sick in the year 2016? Using $group and $project: db.animais.aggregate([ {$unwind :…