Aggregate、pipeline 报错
go mongodb error (Location40323) A pipeline stage specification object must contain exactly one field.
解决
pipeline := bson.A{
bson.M{"$match": bson.M{"host": "api-img-xjp.fengkongcloud.com"}},
bson.M{"$group": bson.M{"_id": "$json.type", "count": bson.M{"$sum": 1}}},
}
修改为
pipeline := []bson.M{
{"$match": bson.M{"host": "api-img-xjp.fengkongcloud.com"}},
{"$group": bson.M{"_id": "$json.type", "count": bson.M{"$sum": 1}}},
}
db := mgd.Client.Database("test")
cursor, err := db.Collection("x-x-x").Aggregate(ctx, pipeline)
