MongoDB过滤器对象数组

Question

我在我的数据库中有以下记录[简化到问题的重要内容]，我想知道是否有一种方法可以选择Type = 1，customerID =“Customer 1”的所有记录并按transDateTime ASC排序？谢谢。

{
    type: "1",
    notes: "bla bla",
    transactions : [ 
        {
            "customerID" : "Customer 1",
            "transDateTime" : ISODate("2017-09-10T18:54:41.983Z")
        }, 
        {
            "transDateTime" : ISODate("2017-08-10T18:54:41.983Z")
        },
        {
            "customerID" : "Customer 1",
            "transDateTime" : ISODate("2017-02-10T11:54:41.983Z")
        }    
    ],
}

Answer 1

您可以通过点表示法访问子字段

find({ "type": "1", "transactions.customerID": "Customer 1" }).sort({ "transactions.transDateTime": 1  })

https://docs.mongodb.com/v3.2/core/document/#document-dot-notation