i want to have a lookup between two nested object arrays in MongoDB - mongodb

Question

I have the following two collections
1)template_data
2)static_data
template_data
{
"_id" : "e1a0a44a-abc1-4185-aefc-2194597a62a2",
"templateName" : "IB Tradebook",
"period" : "Jul-2020",
"attributeData" : [
{
"attributeName" : "BUY/SELL",
"attributeValue" : "B"
},
{
"attributeName" : "EXCHANGE ID",
"attributeValue" : "NYBT"
},
{
"attributeName" : "ACCOUNT NUMBER",
"attributeValue" : "XXXXXXX"
},
{
"attributeName" : "BTML NAME",
"attributeValue" : "CCCCCCCCCCCCCCCCCCCCCC"
},
{
"attributeName" : "TRADE SUMMARY ID",
"attributeValue" : "AAA-BBBB-CCCC"
},
{
"attributeName" : "TRADER NAME",
"attributeValue" : "TOM"
}]
},
{
"_id" : "e1a0a44a-abc1-4185-aefc-2194597a62a2",
"templateName" : "CB Tradebook",
"period" : "Jul-2020",
"attributeData" : [
{
"attributeName" : "BUY/SELL",
"attributeValue" : "B"
},
{
"attributeName" : "EXCHANGE ID",
"attributeValue" : "NYBT"
},
{
"attributeName" : "ACCOUNT NUMBER",
"attributeValue" : "XXXXXXX"
},
{
"attributeName" : "BTML NAME",
"attributeValue" : "CCCCCCCCCCCCCCCCCCCCCC"
},
{
"attributeName" : "TRADE SUMMARY ID",
"attributeValue" : "AAA-BBBB-CCCC"
},
{
"attributeName" : "TRADER NAME",
"attributeValue" : "TOM"
}]
}
static_data
{
"_id" : "ce62f96f-5ef5-4bb0-8bab-9b0a743f968c",
"templateName" : "User_Inventory",
"period" : "Jul-2020",
"attributeData" : [
{
"attributeName" : "TRADING SYSTEM",
"attributeValue" : "ZZZZ",
},
{
"attributeName" : "CLIENT NAME",
"attributeValue" : "XXX TRADING COMPANY",
},
{
"attributeName" : "EFLOW USER ID",
"attributeValue" : "",
},
{
"attributeName" : "TRADER EMAIL ID",
"attributeValue" : "xxxx#goole.com",
},
{
"attributeName" : "USER ID",
"attributeValue" : "TOM"
}]
},
{
"_id" : "ce62f96f-5ef5-4bb0-8bab-9b0a743f968c",
"templateName" : "Client_Inventory",
"period" : "Jul-2020",
"attributeData" : [
{
"attributeName" : "TRADING SYSTEM",
"attributeValue" : "ZZZZ",
},
{
"attributeName" : "CLIENT NAME",
"attributeValue" : "XXX TRADING COMPANY",
},
{
"attributeName" : "EFLOW USER ID",
"attributeValue" : "",
},
{
"attributeName" : "TRADER EMAIL ID",
"attributeValue" : "xxxx#goole.com",
},
{
"attributeName" : "USER ID",
"attributeValue" : "TOM"
}]
}
My requirement is
1.From template_data collection i have filter all the documents with
templateName = 'IB Tradebook',
period = 'Jul-2020'
2.From statci_data collection i have filter all the documents with
templateName = 'User_Inventory',
period = 'Jul-2020'
3.filter condition from both collections
template_data.attributeData.attributeName = "TRADER NAME"
static_data.attributeData.attributeName = "USER ID"
SQL Equivalent:
Select template_data.attributeData.attributeName, template_data.attributeData.attributeValue,
static_data.attributeData.attributeName, static_data.attributeData.attributeValue
from template_data
left join static_data on (template_data.attributeData.attributeValue = static_data.attributeData.attributeValue)
Where template_data.attributeData.attributeName in ("BUY/SELL", "EXCHANGE ID", "TRADER NAME")
and static_data.attributeData.attributeName in ("TRADING SYSTEM","CLIENT NAME", "USER ID")
and template_data.templateName = 'IB Tradebook' and template_data.period = 'Jul-2020'
and static_data.templateName = 'User_Inventory' and static_data.period = 'Jul-2020';
db.template_data.aggregate([
{
$lookup :
{ from : "static_data",
localField: "template_data.attributeData.atributeValue"
ForeignField : "static_data.attributeData.atributeValue"
as : "static_details"
}
}
4.$project and expected results
for the above condition the
"template_data.attributeData.atributeValue" (TOM) matches with
"static_data.attributeData.atributeValue" (TOM)
AttributNames to be considered in output
template_data : attributeName["BUY/SELL", "EXCHANGE ID", "TRADER NAME"]
static_data : attributeName["TRADING SYSTEM","CLIENT NAME", "USER ID" ]
output :
{
"_id" : "e1a0a44a-abc1-4185-aefc-2194597a62a2",
"templateName" : "IB Tradebook",
"period" : "Jul-2020",
"attributeData" : [
{
"attributeName" : "BUY/SELL",
"attributeValue" : "B"
},
{
"attributeName" : "EXCHANGE ID",
"attributeValue" : "NYBT"
},
{
"attributeName" : "TRADER NAME",
"attributeValue" : "TOM"
}
],
static_details : {
"_id" : "ce62f96f-5ef5-4bb0-8bab-9b0a743f968c",
"templateName" : "User_Inventory",
"period" : "Jul-2020",
"attributeData" : [
{
"attributeName" : "TRADING SYSTEM",
"attributeValue" : "ZZZZ",
},
{
"attributeName" : "CLIENT NAME",
"attributeValue" : "XXX TRADING COMPANY",
},
{
"attributeName" : "USER ID",
"attributeValue" : "TOM"
}]
}
}