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Normalizó la estructura de matriz en múltiples documentos en mongoDB

La entrada es un documento de una vez

 { "name": [ "abc", "xyz" ], "values": [ "123", "100" ] }

La explicación Quiero normalizar la matriz en varios documentos, abc y xyz vienen dinámicamente, estos son parámetros definidos por el usuario

Rendimiento esperado

 [ { "data": { "name": "abc", "values": "123" } }, { "data": { "name": "xyz", "values": "100" } } ];
over 4 years ago · Santiago Trujillo
2 answers
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0

Lo que quieres hacer es usar $zip , así:

 db.collection.aggregate([ { $project: { data: { $map: { input: { $zip: { inputs: [ "$name", "$values" ] } }, as: "zipped", in: { name: { "$arrayElemAt": [ "$$zipped", 0 ] }, values: { "$arrayElemAt": [ "$$zipped", 1 ] } } } } } }, { $unwind: "$data" }, { $replaceRoot: { newRoot: { data: "$data" } } } ])

Parque infantil Mongo

over 4 years ago · Santiago Trujillo Report

0

Prueba esto:

 db.testCollection.aggregate([ { $project: { "data": { $map: { input: { $zip: { inputs: ["$name", "$values"] } }, as: "item", in: { name: { $arrayElemAt: ["$$item", 0] }, values: { $arrayElemAt: ["$$item", 1] } } } } } }, { $unwind: "$data" } ]);
over 4 years ago · Santiago Trujillo Report
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