Practical/Assignment-B2/Queries-B2.md

@@ -27,20 +27,17 @@ db.Employee.aggregate([
 2. Find Employee with Total Salary for Each City with Designation "Developer":
 ```mongodb
 db.Employee.aggregate([
-  {
-    $match: {
-      Designation: "Developer"
+    {
+        $match: { Designation: "Developer" }
+    },
+    {
+        $group: {
+            _id: { $arrayElemAt: ["$Address.PAddr", 0] },
+            TotalSalary: { $sum: "$Salary" }
+        }
     }
-  },
-  {
-    $group: {
-      _id: "$Address.PAddr",
-      Total: { $sum: "$Salary" }
-    }
-  }
 ])
 
-
 ```
 
 3. Find Total Salary of Employee with Designation "Tester" for Each Company: