用$ regex過濾數組元素

Question

 ///sample Data 
{
    "_id" : "CUST1234",
    "Phone Number" : "9585290750",
    "First Name" : "jeff",
    "Last Name" : "ayan",
    "Email ID" : "",
    "createddate" : 1462559400000.0,
    "services" : [ 
        {
            "type" : "Enquiry",
            "timeSpent" : "0:00",
            "trxID" : "TRXE20160881",
            "CustomerQuery" : "Enquiry about travell agent numbers in basaveshwara nagara",
            "ServiceProvided" : "provided info through whatsapp",
            "Category" : "Tours/Travels",
            "callTime" : "2016-05-06T18:30:00.000Z",
            "ActualAmount" : 0,
            "FinalAmount" : 0,
            "DiscountRuppes" : 0,
            "DiscountPerctange" : 0
        }, 
        {
            "type" : "Enquiry",
            "timeSpent" : "0:00",
            "trxID" : "TRXE20160882",
            "CustomerQuery" : "Enquiry about Electric bill payment of house",
            "ServiceProvided" : "Service provided",
            "Category" : "Utility Services",
            "callTime" : "2016-05-10T18:30:00.000Z",
            "ActualAmount" : 0,
            "FinalAmount" : 0,
            "DiscountRuppes" : 0,
            "DiscountPerctange" : 0
        }, 
        {
            "type" : "Enquiry",
            "timeSpent" : "0:00",
            "trxID" : "TRXE20160883",
            "CustomerQuery" : "Enquiry about KPSC office number",
            "ServiceProvided" : "provided info through whatsapp",
            "Category" : "Govt Offices/Enquiries",
            "callTime" : "2016-05-13T18:30:00.000Z",
            "ActualAmount" : 0,
            "FinalAmount" : 0,
            "DiscountRuppes" : 0,
            "DiscountPerctange" : 0
        }, 
        {
            "type" : "Enquiry",
            "timeSpent" : "0:00",
            "trxID" : "TRXE20160884",
            "CustomerQuery" : "Enquiry about Sagara appolo hospital contact number",
            "ServiceProvided" : "provided the information through call",
            "Category" : "Hospitals/Equipments",
            "callTime" : "2016-05-14T18:30:00.000Z",
            "ActualAmount" : 0,
            "FinalAmount" : 0,
            "DiscountRuppes" : 0,
            "DiscountPerctange" : 0
        },
 ]
}

預期輸出：與“服務”字段中搜索框中的特定字符串匹配的整個數據。

     db.collection.aggregate([
        { 
            $match: { 
                "Phone Number": "9585290750", 
                "services": { $regex: "/^t/", $options: "s i" }
            }
        },                     
        {
            $project: {
                "Services": "services" 
            }
        }
    ]);

我在上述集合的正則表達式部分遇到問題， services是一個數組字段。 請幫助我過濾數據。

Answer 1

這是因為您要將JavaScript正則表達式對象的字符串傳遞給$regex 。 將您的正則表達式更改為以下之一。

"service": { "$regex": /^t/, "$options": "si" }

要么

"service": { "$regex": "^t", "$options": "si" }

Answer 2

伙計們，自從我剛接觸Mongodb以來，我花了一天的時間才能找到適合自己任務的解決方案。 我有解決問題的方法。 如果你們有比這更好的查詢，只需發布​​或修改它即可。...

 db.collections.aggregate([
        {"$match":{"Corporate_ID":"id"}},
        {"$unwind":"$services"},
        {"$match":{"$or":[
            {"services.type":{$regex:'TRXF2016088142',"$options": "i"}},
            {"services.timeSpent":{$regex:'TRXF2016088142',"$options": "i"}},
            {"services.trxID":{$regex:'TRXF2016088142',"$options": "i"}},
            {"services.CustomerQuery":{$regex:'F',"$options": "i"}},
            {"services.ServiceProvided":{$regex:'F',"$options": "i"}},
            {"services.Category":{$regex:'F',"$options": "i"}},
            {"services.callTime":{$regex:'TRXF2016088142',"$options": "i"}},
            {"services.ActualAmount":{$regex:'TRXF2016088142',"$options": "i"}},
            {"services.FinalAmount":{$regex:'TRXF2016088142',"$options": "i"}},
            {"services.DiscountRuppes":{$regex:'TRXF2016088142',"$options": "i"}},
            {"services.DiscountPerctange":{$regex:'TRXF2016088142',"$options": "i"}}                     
            ]}},
        {"$unwind":"$services"},
        {"$project":{
            "service":"$services"}
               }        
])