node.js - 在mongodb中查询字符串日期格式

Question

我的 mongoDB 集合中有如下数据。我想统计今天的总数或 search_term。

_id:ObjectId("5b7e1d38981cdc1a7c8bb5fc")
search_term:"Baiyoke Boutique"
date:"August 23rd 2018, 9:34:32 am"

_id:ObjectId("5b7e1fa8fa27fd2754080ad9")
search_term:"Baiyoke Boutique"
date:"August 23rd 2018, 9:44:56 am"

_id:ObjectId("5b7e28314d2d0f388c1596cd")
search_term:"Baiyoke Florting Market"
date:"August 23rd 2018, 10:21:21 am"

我试过以下查询。我用过moment。我不是我犯了什么错误。

var start = moment().startOf('day');
var end = moment().endOf('day');

history.find({
    date: {
        $gte: start,
        $lt: end
    }
    }).count().toArray(
    function (e, res) {
        if (e) callback(e)
        else callback(null, res)
});

Answer 1

您可以在 mongodb 3.6 及更高版本中尝试以下查询

db.collection.find({
  "$expr": {
    "$gte": [{ "$dateFromString": { "dateString": "$date" }}, start.toDate() ],
    "$lt": [{ "$dateFromString": { "dateString": "$date" }}, end.toDate() ]
  }
}).count()

或聚合

db.collection.aggregate([
  { "$addFields": {
    "date": {
      "$dateFromString": {
        "dateString": "$date"
      }
    }
  }},
  { "$match": { "date": { "$gte": start.toDate(), "$lt": end.toDate() }}},
  { "$count": "count" }
])