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i have try to convert below sql query in mongodb query

SQL
select * from photographer as Ph inner join user as U on U.id=Ph.user_id inner join photographer_review as Pr on Pr.photographer_id=Ph.id inner join photographer_events as Pe on Pe.photographer_id=Ph.id inner  join event as E on E.id =Pe.event_id where (E.date <='22/05/2016' or E.date >='22/05/2016') and Ph.user_id='1' and maximum_distance='15'


What I have tried:

db.photographer.aggregate([{
$match: {
"user_id": uid,
"maximum_distance": {
$gte: mi
}
}
},
{
$lookup: {
from:"user",
localField: "user_id",
foreignField: "_id",
as: "user_data",
}

},{
$lookup: {
from:"photographer_events",
localField: "_id",
foreignField: "photographer_id",
as: "photographer_event_data",
}
}, {$lookup:{
from: "photographer_review",
localField: "_id",
foreignField: "photographer_id",
as: "photographer_data", }
}], function (err, ph_data) {})

i have use this type but i can't join on event collection

Please Help....
Posted
Updated 5-Aug-18 10:47am

1 solution

Try this way...

db.Order.aggregate([
   {
      $lookup:{
         from:"City",
         localField:"City Key",
         foreignField:"City Key",
         as:"lsg"
      }
   },
   {
      $unwind:"$lsg"
   },
   {
      $lookup:{
         from:"Employee",
         localField:"Salesperson Key",
         foreignField:"Employee Key",
         as:"lsg2"
      }
   },
   {
      $unwind:"$lsg2"
   },
   {
      $project:{
         "_id":1,
         "Employee":1,
         "Salesperson Key":1,
         "City":"$lsg.City"
      }
   }
]);
 
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